Wikipedia:WikiProject Missing encyclopedic articles/Global Names Index/Y


 * Yaadia californiana
 * Yaadia californiana (Packard 1921)
 * Yaadia Crickmay 1930
 * Yaadia daedalea
 * Yaadia deckeina
 * Yaadia deckeina (Kubota 1952)
 * Yaadia hemphilli
 * Yaadia hemphilli (Anderson 1958)
 * Yaadia hondaana
 * Yaadia japonica obsoleta
 * Yaadia japonica obsoleta (Kobayashi &amp; Amano 1955)
 * Yaadia jonesi
 * Yaadia jonesi Saul 1978
 * Yaadia koshikiana
 * Yaadia koshikiana Tashiro &amp; Kano 1989
 * Yaadia leana
 * Yaadia leana (Gabb 1877)
 * Yaadia lewisagassizi
 * Yaadia lewisagassizi Crickmay 1930
 * Yaadia nodosa
 * Yaadia obsoleta
 * Yaadia obsoleta (Kobayashi &amp; Amano 1955)
 * Yaadia tanii
 * Yaadia tanii Tashiro &amp; Morozumi 1982
 * Yaadia tryoniana
 * Yaadia tryoniana (Gabb 1864)
 * Yaadia valentina
 * Yaadia whiteavesi
 * Yaadia whiteavesi (Packard 1921)
 * Yaba monkey tumor virus ICTV
 * Yaba monkey tumor virus [AJ293568] Yaba monkey tumor virus ICTV
 * Yaba monkey virus
 * Yabapoxvirus
 * Yabea
 * Yabea densecrenulata
 * Yabea densecrenulata Tashiro &amp; Kozai 1988
 * Yabea Hayami 1965
 * Yabea K. -Pol.
 * Yabea K.-Pol.
 * Yabea Koso-Pol.
 * Yabea Kozo-Poljansky 1916
 * Yabea Kozo-Poljansky, 1916
 * Yabea microcarpa
 * Yabea microcarpa ( (Hook. &amp; Arn.) ) Koso-Polj.
 * Yabea microcarpa (H. &amp; A.) Kozo-Polj.
 * Yabea microcarpa (Hook. &amp; Arn.) K. -Pol.
 * Yabea microcarpa (Hook. &amp; Arn.) K.-Pol.
 * Yabea microcarpa (Hook. &amp; Arn.) Koso-Pol.
 * Yabea microcarpa (Hook. &amp; Arn.) Koso-Polj.
 * Yabea microcarpa Hook. &amp; Arn.
 * Yabea microcarpa Koso-Pol.
 * Yabea shinanoensis
 * Yabeella
 * Yabeella (Palaeosmilia)
 * Yabeella kuanglungensis
 * Yabeella kuangtungensis
 * Yabeella kuangtungensis Yu 1933
 * Yabeella magnicystosa
 * Yacambuia
 * Yacambuia Gonzalez-Sponga 1987
 * Yacambuia yacambuiensis Gonzalez-Sponga 1987
 * Yachalicystis
 * Yachalicystis Haude 1995
 * Yachalicystis triangularis
 * Yachalicystis triangularis Haude
 * Yachalicystis triangularis Haude 1995
 * Yachandra
 * Yachandra torana
 * Yachandra torana Webb 1983
 * Yachandra Webb 1983
 * Yachatsia
 * Yachatsia Cook 1963
 * Yachatsia euforma
 * Yachatsia euforma Habeeb 1976
 * Yachatsia mideopsoides
 * Yachatsia mideopsoides Cook 1963
 * Yaci
 * Yaci Buen 1953
 * Yaci Buen 1954
 * Yaci de Buen 1953
 * Yaci de Buen 1953 sec. Eschmeyer 1998
 * Yaci de Buen 1953 sec. Eschmeyer 2004
 * Yaci platensis
 * Yaci platensis (Berg 1895)
 * Yaci platensis (Berg, 1895)
 * Yaci retropinis
 * Yaci retropinnis
 * Yadakea japonica
 * Yadakea japonica Makino
 * Yadakea Makino
 * Yadakea owatarii
 * Yadakea owatarii Makino
 * Yadakeya
 * Yadakeya japonica
 * Yadakeya japonica (Siebold &amp; Zucc. ex Steud.) Makino
 * Yadakeya japonica (Siebold &amp; Zucc. ex Steud.) Makino, 1929
 * Yadakeya Makino
 * Yadakeya Makino 1929
 * Yadakeya Makino, 1929
 * Yadakeya ontakensis
 * Yadakeya ontakensis Makino
 * Yadoa
 * Yadoa feae
 * Yadoa feae Roewer 1935
 * Yadoa Roewer 1935
 * Yadoa Roewer 1936
 * Yadon's wallflower
 * Yadranella
 * Yadranella Ercegovic 1949
 * Yadranella Ercegovic, 1949
 * Yadranellaceae
 * Yaeprimus
 * Yaeprimus isigaabeus
 * Yaeprimus isigaabeus Sasa &amp; Suzuki 2000
 * Yaeprimus isigaabeus Sasa &amp; Suzuki, 2000
 * Yaeprimus Sasa &amp; Suzuki 2000
 * Yaequartus
 * Yaequartus iriokeleus
 * Yaequartus iriokeleus Sasa &amp; Suzuki 2000
 * Yaequartus iriokeleus Sasa &amp; Suzuki, 2000
 * Yaequartus Sasa &amp; Suzuki 2000
 * Yaequintus
 * Yaequintus irioquereus
 * Yaequintus irioquereus Sasa &amp; Suzuki 2000
 * Yaequintus irioquereus Sasa &amp; Suzuki, 2000
 * Yaequintus Sasa &amp; Suzuki 2000
 * Yaeria coronata
 * Yaeria coronata (Molin )
 * Yaerikima
 * Yaerikima kartaboana
 * Yaerikima kartaboana (van Name 1936)
 * Yaerikima kartaboana Van Name 1936
 * Yaerikima Leistikow 2001
 * Yaesecundus
 * Yaesecundus iriobeceus
 * Yaesecundus iriobeceus Sasa &amp; Suzuki 2000
 * Yaesecundus iriobeceus Sasa &amp; Suzuki, 2000
 * Yaesecundus Sasa &amp; Suzuki 2000
 * Yaetakaria
 * Yaetakaria Hoffman 1949
 * yagana (Marcus 1954) Artois &amp; Schockaert 1998
 * yagana Marcus 1954
 * Yagansia
 * Yagansia beddardi
 * Yagansia beddardi (Rosa 1895)
 * Yagansia chilensis
 * Yagansia chilensis Cognetti 1906
 * Yagansia chiloensis
 * Yagansia chiloensis Michaelsen 1921
 * Yagansia coralensis
 * Yagansia corralensis (Beddard 1895)
 * Yagansia covarrubiasi
 * Yagansia covarrubiasi Zicsi 1989
 * Yagansia delfini
 * Yagansia delfini Michaelsen 1899
 * Yagansia dicastrii
 * Yagansia dicastrii Zicsi 1989
 * Yagansia diversicolor
 * Yagansia diversicolor (Beddard 1895)
 * Yagansia gracilis
 * Yagansia gracilis (Bedd. )
 * Yagansia gracilis (Beddard 1895)
 * Yagansia grandis
 * Yagansia grandis Zicsi 1993
 * Yagansia grisea
 * Yagansia grisea (Beddard 1895)
 * Yagansia hajeki
 * Yagansia hajeki Zicsi 1989
 * Yagansia kinbergi
 * yahiai (Blanchard &amp; Richard 1891)
 * yahiai Blanchard &amp; Richard 1891
 * Yahiroara
 * Yahiroara cross
 * Yahiroara Hort. 1978
 * Yahiroara Hort., 1978
 * Yahiroara Horticultural cross
 * Yahsimanisporites
 * Yahsimanisporites B. Agrali in B. Agrali &amp; Y. Konyali 1969
 * Yahsimanisporites B. Agrali in B. Agrali et Y. Konyali, 1969
 * Yahuarmayoia
 * Yahuarmayoia analis
 * Yahuarmayoia analis Townsend 1927
 * Yahuarmayoia analis Townsend, 1927
 * Yahuarmayoia phaeoptera
 * Yahuarmayoia phaeoptera Wiedemann 1830
 * Yahuarmayoia phaeoptera Wiedemann, 1830
 * Yahuarmayoia Townsend 1927
 * Yahuarphryno
 * Yahuarphryno patelloides
 * Yahuarphryno patelloides Townsend 1927
 * Yahuarphryno patelloides Townsend, 1927
 * Yahuarphryno Townsend 1927
 * Yahuartachina
 * Yahuartachina Townsend 1927
 * Yahuartachina yahuarphrynoides
 * Yahuartachina yahuarphrynoides Townsend 1927
 * Yahuartachina yahyarphrynoides
 * Yahyarphryno
 * Yaiminia microtragus Rossm. 1859
 * yairi O'Loughlin and Rowe 2006
 * yaito Kishinouye 1915
 * Yajimaina Malz 1981
 * Yajinmaina
 * Yajinmaina Malz 1981
 * Yak (Anonymous)
 * Yak 1845
 * Yak [Anonymous] 1845
 * Yakia
 * Yakia D. White 1929
 * Yakia D. White, 1929
 * Yakia heterophylla
 * Yakimovella
 * Yakimovella erinacei
 * Yakimovella erinacei Gousseff 1936
 * Yakimovella erinacei Gousseff 1937
 * Yakimovella Gousseff 1936
 * Yakimovella Gousseff 1937
 * Yakirra
 * Yakirra australiensis
 * Yakirra australiensis (Domin) Lazarides &amp; R.D. Webster
 * Yakirra australiensis (Domin) Lazarides &amp; R.D. Webster var. austrliensis
 * Yakirra australiensis (Domin) Lazarides &amp; R.D. Webster var. intermedia R.D. Webster
 * Yakirra australiensis (Domin) Lazarides &amp; R.D.Webste
 * Yakirra australiensis (Domin) Lazarides &amp; R.D.Webster
 * Yakirra australiensis (Domin) Lazarides &amp; R.D.Webster var. intermedia R.D.Webster
 * Yakirra australiensis australiensis
 * Yakirra australiensis austrliensis
 * Yakirra australiensis intermedia
 * Yakirra australiensis var. australiensis
 * Yakirra australiensis var. australiensis (Domin) Lazarides &amp; R.D.Webster
 * Yakirra australiensis var. intermedia
 * Yakirra australiensis var. intermedia R.D.Webster
 * Yakirra foliolosa
 * Yala argentata
 * Yala argentata Krzeminski
 * Yala argentata Krzeminski 1992
 * Yala argentata Krzeminski, 1992
 * Yala Chu 1979
 * Yala Krzeminski 1992
 * Yala pyricola
 * Yala pyricola Chu 1979
 * Yalanga
 * Yalarrnga
 * Yalarrnga Kruse 2002
 * Yalarrnga mara
 * Yalarrnga mara Kruse 2002
 * Yalavis
 * Yalavis Shufeldt 1913
 * Yalavis tenuipes
 * Yalavis tenuipes Shufeldt 1913
 * yaldwini Fell 1958
 * yaldwyni Ahyong &amp; Dawson 2006
 * yaldwyni Burukovsky 2006
 * yaldwyni Fell 1958
 * yaldwyni Hardy 1987
 * yaldwyni McLaughlin 1994
 * yaldwyni Schnabel 2009
 * Yaldwynopsis
 * Yaldwynopsis Guinot &amp; Richer de Forges 1995
 * Yaldwynopsis Guinot and Richer de Forges, 1995
 * Yaldwynopsis guinotae
 * Yaldwynopsis guinotae de Forges &amp; Ng 2007
 * Yam mild mosaic virus Dioscorea alata virus ICTV
 * Yam mild mosaic virus ICTV
 * Yam mild mosaic virus Yam mild mosaic virus ICTV
 * Yam mild virus
 * Yam mosaic virus
 * Yam mosaic virus Dioscorea green banding virus ICTV
 * Yam mosaic virus ICTV
 * Yam mosaic virus [U42596] Yam mosaic virus ICTV
 * Yam spherical virus
 * Yama
 * Yama Sublette &amp; Martin 1980
 * Yama tahitiensis
 * Yama tahitiensis Sublette
 * Yama tahitiensis Sublette &amp; Martin 1980
 * Yama tahitiensis Sublette &amp; Martin, 1980
 * Yamaceratops
 * Yamaceratops dorngobiensis
 * Yamaceratops dorngobiensis Makovicky &amp; Norell 2006
 * Yamaceratops Makovicky &amp; Norell 2006
 * yamadae (Garbary) Y. Lee &amp; I.K. Lee 1988
 * yamadae (Ohmi &amp; Itono) Abbott &amp; Yoshizaki 1981
 * yamadae (Segawa) Masuda 1993
 * yamadae Fan 1951
 * yamadae Itono 1977
 * yamadae Masuda 1982
 * yamadae Mori 1937
 * yamadae Segawa 1941
 * yamadae Tanaka &amp; Itono 1977
 * yamadae Tanaka 1944
 * Yan Barnard &amp; Drummond 1978
 * Yan errichus
 * Yan errichus Barnard &amp; Drummond 1978
 * Yan errichus Barnard &amp; Drummond, 1978
 * Yan errichus J.L. Barnard &amp; Drummond 1978
 * Yan tiendi
 * Yan tiendi Barnard &amp; Drummond 1978
 * Yan tiendi J.L. Barnard &amp; Drummond 1978
 * Yanacea
 * Yanacea alpina
 * Yanacea alpina Carriker 1933
 * Yanacea Carriker 1933
 * Yanadesmus
 * Yanadesmus celedinus
 * Yanadesmus celedinus Chamberlin 1955
 * Yanadesmus celedinus Chamberlin, 1955
 * Yanadesmus celendinus
 * Yanadesmus celendinus Chamberlin 1955
 * Yanadesmus Chamberlin 1955
 * Yanadesmus Chamberlin, 1955
 * Yanadesmus chusgonus
 * Yanadesmus chusgonus Chamberlin 1955
 * Yanadesmus chusgonus Chamberlin, 1955
 * yanagitai Suzuki &amp; Senou 2007
 * yaname Hoshina &amp; Suenaga 1954
 * yanamensis Visweswara Rao 1971
 * Yananoconcha
 * Yananoconcha bella
 * Yananoconcha bella Yu 1984
 * Yaocapsa Kozur 1986
 * Yaocapsa Kozur, 1986
 * Yaocapsa macroporata
 * Yaocapsa macroporata Kozur 1986
 * Yaojiayuella
 * Yaojiayuella convexolimbata
 * Yaojiayuella convexolimbata Lu, Zhu &amp; Zhang 1988
 * Yaojiayuella diversa
 * Yaojiayuella diversa Lin &amp; Wu 1980
 * Yaojiayuella jinnanensis
 * Yaojiayuella jinnanensis Lin &amp; Wu 1980
 * Yaojiayuella liaoningensis
 * Yaojiayuella liaoningensis Guo &amp; An 1982
 * Yaojiayuella Lin &amp; Wu 1980
 * Yaojiayuella Lin &amp; Wu in Zhang et al 1980
 * Yaojiayuella LIN &amp; WU in ZHANG et al. 1980
 * Yaojiayuella Lin &amp; Wu in Zhang Lin, Wu &amp; Yuan 1980
 * Yaojiayuella ocellata
 * Yaojiayuella ocellata Lin &amp; Wu 1980
 * Yaojiayuella poshanensis
 * Yaojiayuella poshanensis Lin &amp; Wu 1980
 * Yaojiayuella zhangxiaensis
 * Yaojiayuella zhangxiaensis Lu, Zhu &amp; Zhang 1988
 * Yaomoshania
 * Yaomoshania minutosquama
 * Yaomoshania minutosquama Poplin, Wang, Richter &amp; Smith 1991
 * Yaomoshania Poplin Wang, Richter &amp; Smith 1991
 * Yaomoshania Poplin, Wang, Richter &amp; Smith 1991
 * Yaonoiella
 * Yapacana Pinto-da-Rocha 1997
 * Yapacana tibialis
 * Yapacana tibialis Pinto-da-Rocha 1997
 * Yapara
 * Yapara cross
 * Yapara Horticultural cross
 * Yaphora
 * Yaphora Matsumura 1942
 * Yaphora palludina
 * Yaphora palludina Matsumura 1942
 * Yaphora palludina Matsumura, 1942
 * yapilli Cuvier 1828
 * Yapoclonius
 * Yapoclonius Lepesme 1956
 * Yapolepis
 * Yapolepis Mariaux 1991
 * Yapolepis yapolepis
 * Yapolepis yapolepis Mariaux 1991
 * Yapoma
 * Yapoma chone
 * Yapoma chone Rindge 1986
 * Yapoma Rindge 1986
 * Yaponotus
 * Yaponotus Capener 1953
 * Yaponotus villiersi
 * Yaponotus villiersi Capener 1953
 * yappensis Okuda 1937
 * Yaquia travisi
 * Yaquicoccus
 * Yaquicoccus bernardinus
 * Yaquicoccus bernardinus Taylor 1987
 * Yaquicoccus Taylor 1987
 * yaquina Voss &amp; Pearcy 1990
 * Yaquinabyssia
 * Yaquinabyssia careyi
 * Yaquinabyssia careyi McLean 1988
 * Yaquinabyssia Haszprunar 1988
 * Yaquinabyssia Haszprunar, 1988
 * yaquinae (Coleman &amp; Nafpaktitis 1972)
 * yaquinae Coleman &amp; Nafpaktitis 1972
 * yaquinae Fauchald 1977
 * yaquinae Iwamoto &amp; Stein 1974
 * Yaquinaia
 * Yaquinaia microrhynchus
 * Yaquinaia microrhynchus Schockaert &amp; Karling 1970
 * Yaquinaia microrhynchus Schockaert &amp; Karling, 1970
 * Yaquinaia Schockaert &amp; Karling 1970
 * yaquinensis Ambler 1980
 * Yaquius
 * Yaquius Mason 1990
 * Yaquius travisi
 * Yara dybasi
 * Yara dybasi Reichardt &amp; Hinton 1976
 * Yara Reichardt &amp; Hinton 1976
 * Yara vaninl
 * Yara vaninl Reichardt &amp; Hinton 1976
 * Yarabina
 * Yarabina alawara
 * Yarabina alawara (Otte &amp; Alexander 1983)
 * Yarabina alawara (Otte &amp; Alexander, 1983)
 * Yarabina alawara (Otte, D. &amp; R.D. Alexander 1983)
 * Yarabina alawara (Otte, D. &amp; R.D. Alexander, 1983)
 * Yarabina australicus
 * Yarabina australicus (Chopard 1925)
 * Yarabina australicus (Chopard, 1925)
 * Yarabina dardoana
 * Yarabina dardoana (Otte &amp; Alexander 1983)
 * Yarabina dardoana (Otte &amp; Alexander, 1983)
 * Yarabina dardoana (Otte, D. &amp; R.D. Alexander 1983)
 * Yarabina dardoana (Otte, D. &amp; R.D. Alexander, 1983)
 * Yarabina indiwara
 * Yarabina indiwara (Otte &amp; Alexander 1983)
 * Yarabina indiwara (Otte &amp; Alexander, 1983)
 * Yarabina indiwara (Otte, D. &amp; R.D. Alexander 1983)
 * Yarabina indiwara (Otte, D. &amp; R.D. Alexander, 1983)
 * Yarabina Otte 1994
 * Yarakia
 * Yarakia yurakiensis
 * Yarakia yurakiensis Rozova
 * Yarala
 * Yasa Distant 1907
 * yasawaensis Wakefield &amp; McCleery 2006
 * yasha Yoshino &amp; Shimada 2001
 * yashimaense Yoshimatsu, Toriumi &amp; Dodge 2004
 * Yashmakia
 * Yashmakia bigrisea
 * Yashmakia bigrisea Holloway 1993
 * Yashmakia conflagrata
 * Yashmakia conflagrata (Hampson )
 * Yashmakia conflagrata (Hampson)
 * Yashmakia erythra
 * Yashmakia erythra (Hampson )
 * Yashmakia erythra (Hampson)
 * Yashmakia loxozyga
 * Yashmakia loxozyga Holloway 1993
 * Yashmakia loxozyga Prout
 * Yashmakia medionubis
 * Yashmakia medionubis (Prout )
 * Yashmakia medionubis (Prout)
 * Yashmakia orsinephes
 * Yashmakia orsinephes (Prout 1928)
 * Yashmakia submissa
 * Yashmakia submissa (Warren )
 * Yashmakia submissa (Warren)
 * Yashmakia suffusa
 * Yashmakia suffusa (Warren )
 * Yashmakia suffusa (Warren)
 * Yashmakia vanbraeckeli
 * Yashmakia vanbraeckeli Debauche 1941
 * Yatabea
 * Yatabea japonica
 * Yatabea japonica Maxim.
 * Yatabea Maxim. ex Yatabe
 * Yatabea Maximowicz ex Yatabe
 * Yatabea Maximowicz ex Yatabe 1891
 * Yatabea Maximowicz ex Yatabe, 1891
 * yatabei (Jordan &amp; Snyder 1900)
 * yatabei Jordan &amp; Snyder 1900
 * Yatabella
 * Yatabella hirsuta
 * Yatabella hirsuta Okamura
 * Yatabella hirsuta Okamura 1900
 * Yatabella hirsuta Okamura, 1900
 * Yatabella Okamura
 * Yatabella Okamura 1900
 * Yatabella Okamura, 1900
 * Yataengia
 * Yataengia asiatica
 * Yataengia asiatica Huang 1932
 * Yataengia hangchowensis
 * Yataengia hangchowensis Yoh &amp; Huang 1932
 * Yataengia Huang 1932
 * Yataengia kiangsuensis
 * Yataengia kiangsuensis Yoh &amp; Huang 1932
 * Yataengia Yoh &amp; Huang 1932
 * Yatai
 * Yatala
 * Yatala hirsti
 * Yaucorotalia moussai
 * Yaucorotalia moussai Seiglie 1972
 * Yaucorotalia Seiglie 1972
 * Yaucorotalia Seiglie, 1972
 * Yaundea
 * Yaundea G.Schellenb.
 * Yaundea Gilg in Engler &amp; Prantl
 * Yaundea lescrauwaeti
 * Yaundea lescrauwaeti G.Schellenb.
 * Yaundea oddoni
 * Yaundea oddoni G.Schellenb.
 * Yaundea oddonii
 * Yaundea oddonii G.Schellenb.
 * Yaundea pinnata
 * Yaundea pinnata G.Schellenb.
 * Yauravia albidula
 * Yauravia limbata
 * Yaurina
 * Yaurina Molineri 2001
 * Yaurina mota
 * Yaurina mota Molineri 2001
 * Yaurina ralla
 * Yaurina ralla (Allen 1967)
 * Yaurina yapa
 * Yaurina yapa Molineri 2001
 * Yaurina yuta
 * Yaurina yuta Molineri 2001
 * Yavanna
 * Yavanna altaica
 * Yavanna altaica Szeptycki 1988
 * Yavanna altaica Szeptycki, 1988
 * Yavanna Szeptycki 1988
 * Yavapai County buckwheat
 * Yaveina
 * Yaveina Deprat 1914
 * Yaveina Lee 1989
 * Yavelandia
 * Yaverlandia
 * Yaverlandia bitholus
 * Yaverlandia bitholus Galton 1971
 * Yaverlandia Galton 1971
 * Yavia
 * Yavia cryptocarpa
 * Yavia cryptocarpa R. Kiesling &amp; Piltz (2001)
 * Yavia cryptocarpa R.Kiesling &amp; Piltz
 * Yavia cryptocarpa R.Kiesling et J.Piltz, 2001
 * Yavia R. Kiesling &amp; J. Piltz 2001
 * Yavia R. Kiesling et J. Piltz, 2001
 * Yavia R.Kiesling &amp; Piltz
 * Yavia R.Kiesling &amp; Piltz (2001)
 * Yavia R.Kiesling et J.Piltz, 2001
 * Yavnella
 * Yavnella argamani
 * Yavnella argamani Kugler
 * Yavnella argamani Kugler 1987
 * Yavnella argamani Kugler, 1987
 * Yaworipora khalfinae
 * Yaworipora khalfinae Zhuravlev 1999
 * Yaworipora Zhuravlev 1999
 * Yaxartemys longicauda
 * Yaxartemys longicauda Ryabinin 1948
 * Yaxartemys longicaudata
 * Yaxartemys Riabinin 1948
 * Yaxartemys Ryabinin 1948
 * Yaxartosaurus fuyunensis
 * Yaxartosaurus fuyunensis Wu 1984
 * Yaxianella
 * Yaxianella Lin 1979
 * Yaxianella punctata
 * Yaxianella punctata Zhang 1986
 * Yaxianella sulcata
 * Yaxianella sulcata Lin 1979
 * Yayoiacmea
 * Yayoiacmea maraisi
 * Yayoiacmea maraisi (Kilburn, 1977)
 * Yayoiacmea maraisi Kilburn, 1977
 * Yayoiacmea oyamai
 * Yayoiacmea oyamai (Habe 1955)
 * Yayoiacmea radral threads prof-retained
 * Yayoiacmea roseoradiata
 * Yayoiacmea roseoradiata (Smith, 1901)
 * Yayoiacmea roseoradiata Smith, 1901
 * Yayoiacmea Sasaki &amp; Okutani 1993
 * Yazakia callipteris
 * Yazakia callipteris Sato 1999
 * Yazakia kalisi
 * Yazakia kalisi Sato 1999
 * Yazakia pilosaria
 * Yazakia pilosaria Sato 1999
 * Yazakia pulcherrima
 * Yazakia pulcherrima Sato 1999
 * Yazakia Sato 1999
 * Yazawaia
 * Yazawaia japonica
 * Yazawaia japonica Marumo 1920
 * Yazawaia Marumo 1920
 * Ybaelosoecia subverticellata
 * Ybexaspis PRIBYL et al. 1985
 * Ybotromyces caespitosus
 * Ybotromyces caespitosus (de Hoog &amp; C. Rubio) Rulamort
 * Ybotromyces caespitosus (de Hoog &amp; C. Rubio) Rulamort 1990
 * Ybotromyces Rulamort
 * Ybotromyces Rulamort 1986
 * Ybotryomyces
 * Ybotryomyces caespitosus
 * Ybotryomyces caespitosus (de Hoog &amp; C. Rubio) Rulamort
 * Ybrika Bolivar 1916
 * Ybselosoecia
 * Ybselosoecia Canu &amp; Lecointre 1933
 * Ybselosoecia palmata
 * Ybselosoecia subverticillata
 * Ybselosoecia subverticittata
 * Ybselosoecia typica
 * Ybselosoecia typica (Manzoni 1878)
 * Ycaploca evansi
 * Ycaploca evansi Nagy
 * Ycaploca evansi Nagy 1975
 * Ycaploca fijianus
 * Ycaploca fijianus Beaver 2002
 * Ycaploca Nagy 1975
 * Ycasbraia
 * Ycasbraia Argaman 1996
 * Ycasbraini
 * Ycasbraini Argaman 1996
 * Ycerya purchasi
 * Ycerya purchasi Hadzibejli 1983
 * Ycerya purchasi Hadzibejli, 1983
 * Ycticyon Ameghino 1881
 * Ydiella Boulard
 * Ydiella Boulard 1973
 * Ydiella gilloni
 * Ydiella gilloni Boulard 1973
 * Ydiella maxicapsulifera
 * Ydiella maxicapsulifera Boulard 1986
 * Ydiellaria
 * Ydiellaria Boulard 1973
 * Ydiellinae
 * Ydiellinae Boulard
 * Ydiellinae Boulard 1973
 * Ydiellini
 * Ydiellini Boulard
 * Ydiellini Boulard 1973
 * Ydorpes Motschoulsky 1845
 * Yea Distant 1886
 * Yeaia
 * Yeaia africana
 * Yealepis
 * Yealepis Burrow &amp; Young 1999
 * Yealepis douglasi
 * Yealepis douglasi Burrow &amp; Young 1999
 * Yeast
 * Yeatesia
 * Yeatesia laete-virens
 * Yeatesia laete-virens (Buckley) Small
 * Yeatesia laete-virens Small
 * Yeatesia laetevirens
 * Yeatesia laetevirens (Buckl.) Small
 * Yeatesia laetevirens (Buckley) Small
 * Yeatesia laetevirens Small
 * Yeatesia mabryi
 * Yeatesia mabryi Hilsenb.
 * Yeatesia mabryi Hilsenbeck
 * Yeatesia platystegia
 * Yeatesia platystegia (Torr.) Hilsenb.
 * Yeatesia platystegia (Torr.) Hilsenbeck.
 * Yeatesia platystegia (Torrey) Hilsenb.
 * Yeatesia platystegium
 * Yeatesia platystegium (Torr.)
 * Yeatesia Small
 * Yeatesia Small 1896
 * Yeatesia Small, 1896
 * Yeatesia viridiflora
 * Yebisites Matsumoto 1956
 * Yebisites onoderai
 * Yebisites onoderai Matsumoto 1956
 * Yebonia
 * Yebonia Carvalho 1951
 * Yeelanna
 * Yeelanna argus
 * Yeelanna argus (Rehn 1953)
 * Yeelanna argus (Rehn, 1953)
 * Yeelanna argus (Rehn, J.A.G. 1953)
 * Yeelanna argus (Rehn, J.A.G., 1953)
 * Yeelanna argus Key 1986
 * Yeelanna argus Key, 1986
 * Yeelanna insulana
 * Yeelanna insulana (Rehn 1953)
 * Yeelanna insulana (Rehn, 1953)
 * Yeelanna mutabilis
 * Yeelanna mutabilis (Rehn 1953)
 * Yeelanna mutabilis (Rehn, 1953)
 * Yeelanna pavonina
 * Yeelanna pavonina (Rehn 1953)
 * Yeelanna pavonina (Rehn, 1953)
 * Yeelanna pavonina (Rehn, J.A.G. 1953)
 * Yeelanna pavonina (Rehn, J.A.G., 1953)
 * Yeelanna pavoninae
 * Yeelanna pavoninae (Rehn, J.A.G. 1953)
 * Yeelanna pavoninae (Rehn, J.A.G., 1953)
 * Yeelanna Rehn 1953
 * Yeepengara
 * Yeguapollis W. C. Elsik, 1974
 * Yeguapollis W.C. Elsik 1974
 * Yeharaia annulata
 * Yeharaia annulata Nakaseko &amp; Nishimura 1979
 * Yeharaia bulbosa
 * Yeharaia bulbosa Bragin 1991
 * Yeharaia compsa
 * Yeharaia compsa Sugiyama 1997
 * Yeharaia conica
 * Yeharaia conica Bragin 1991
 * Yeharaia cornigera
 * Yeharaia cornigera Sugiyama 1997
 * Yeharaia elegans
 * Yeharaia elegans Nakaseko &amp; Nishimura 1979
 * Yeharaia japonica
 * Yeharaia japonica Nakaseko &amp; Nishimura 1979
 * Yeharaia lata
 * Yeharaia lata Kozur &amp; Mostler 1994
 * Yeharaia mascula
 * Yeharaia mascula Sugiyama 1997
 * Yeharaia Nakaseko &amp; Nishimura 1979
 * Yeharaia Nakaseko &amp; Nishimura, 1979
 * Yeharaia transita
 * Yeharaia transita Kozur &amp; Mostler 1994
 * Yeharaites
 * Yeharaites dawsoni
 * Yeharaites dawsoni Matsumoto 1991
 * Yeharaites kawashitai
 * Yeharaites kawashitai Matsumoto 1991
 * Yeharaites kobayashii
 * Yeharaites kobayashii Matsumoto &amp; Takahashi 1991
 * Yeia acanthopyga
 * Yeia acanthopyga Dworakowska 1995
 * Yeia Dworakowska 1995
 * Yekerpene pelmensis
 * Yekerpene pelmensis (Kayser 1871)
 * Yekerpene Struve 1992
 * Yelicones (Rhogadinae)
 * Yelicones affinis
 * Yelicones affinis Quicke, Austin &amp; Chishti 1998
 * Yelicones africana
 * Yelicones africana Quicke &amp; Chishti 1997
 * Yelicones anchanae
 * Yelicones anchanae Areekul &amp; Quicke 2006
 * Yelicones anitae
 * Yelicones anitae Areekul &amp; Quicke 2006
 * Yelicones arizonus
 * Yelicones arizonus Quicke, Chishti &amp; Basibuyuk 1996
 * Yelicones artitus
 * Yelicones artitus Areekul &amp; Quicke 2006
 * Yelicones ateronotus
 * Yelicones ateronotus Areekul &amp; Quicke 2006
 * Yelicones barroci
 * Yelicones barroci Quicke, Chishti &amp; Basibuyuk 1996
 * Yelicones bello
 * Yelicones bello Areekul &amp; Quicke 2006
 * Yelicones belokobylskiji
 * Yelicones belokobylskiji Quicke, Chishti &amp; Chen 1997
 * Yelicones belshawi
 * Yelicones belshawi Areekul &amp; Quicke 2006
 * Yelicones bentoni
 * Yelicones bentoni Areekul &amp; Quicke 2006
 * Yelicones bicoloripes
 * Yelicones bicoloripes Quicke, Chishti &amp; Basibuyuk 1996
 * Yelicones boliviensis
 * Yelicones boliviensis Areekul &amp; Quicke 2006
 * Yemenaltica
 * Yemenaltica Scherer 1985
 * Yemenaltica scorteccii
 * Yemenaltica scorteccii Scherer 1985
 * Yemenensis
 * yemenensis (Houart &amp; Wranik 1989)
 * yemenensis Barnard 1941
 * Yemenensis Gridelli E 1939
 * yemenensis Van Belle &amp; Wranik 1991
 * Yemengenilla
 * Yemengenilla Luna de Carvalho 1992
 * Yemengenilla vanharteni
 * Yemengenilla vanharteni Luna de Carvalho 1992
 * Yemenicaris
 * Yemenicaris Bruce 1997
 * Yemenicaris trullicauda
 * Yemenicaris trullicauda Bruce 1997
 * Yemenicaris trullicauda Bruce, 1997
 * Yemeniella
 * Yemeniella friedmani
 * Yemeniella friedmani Lehrer 2008
 * Yemeniella Lehrer 2006
 * Yemeniella suhaylia
 * Yemeniella suhaylia Lehrer 2005
 * Yemeniella suhaylia Lehrer 2006
 * Yemeniella suhaylia Lehrer, 2005
 * Yemenitrombium
 * Yemenitrombium nairae
 * Yemenitrombium nairae Saboori, Ueckermann &amp; van Harten 2005
 * Yendia
 * Yendia bredoi
 * Yendia bredoi Schouteden 1940
 * Yendia bredoi Schouteden, 1940
 * Yendia Ramme 1929
 * Yendia thrymmatoptera
 * Yendia thrymmatoptera (Karsch 1893)
 * Yendia thrymmatoptera (Karsch, 1893)
 * Yendia thrymmatoptera (Karsch, F., 1893)
 * yendoana (Miyabe) C.E. Lane, C. Mayes, Druehl &amp; G.W. Saunders 2006
 * yendoana Narita 1918
 * yendoana Tokida 1943
 * YendoÃ«lla
 * Yendoella A. Mazza 1926
 * YendoÃ«lla A. Mazza, 1926
 * yendoi (Foslie) Chamberlain
 * yendoi (I.K.Lee) Guiry 1982
 * yendoi (Sasaki 1920)
 * yendoi (Segi) M.S.Kim &amp; I.K.Lee 1999
 * yendoi Bï¿½rgesen 1924
 * yendoi De Toni 1905
 * yendoi I.K.Lee 1978
 * yendoi Izuka 1912
 * yendoi Masuda &amp; Yoshida 1997
 * yendoi Okamura &amp; Yamada 1938
 * yendoi Weber-van Bosse 1921
 * yendoi Yamada &amp; Mikami 1965
 * yendoi Yamada 1930
 * Yendonia
 * Yeomjeonicoccus
 * Yeomjeonicoccus luteus
 * Yeosinella
 * Yeosinella consignata
 * Yeosinella consignata Reed 1933
 * Yeosinella Reed 1933
 * Yeosuana
 * Yeosuana aromativorans
 * Yeosuana aromativorans Kwon et al. 2006
 * Yeosuana K.K. Kwon, H.S. Lee, H.B. Jung, J.H. Kang &amp; S.J. Kim, 2006
 * Yeosuana Kwon et al. 2006
 * Yeosuana yeosuensis
 * Yeothyris
 * Yeothyris bicollina romerscheidensis
 * Yeothyris bicollina romerscheidensis Struve 1992
 * Yeothyris Struve 1992
 * Yepcalphis
 * Yepcalphis cingalesa
 * Yepcalphis cingalesa Warren 1913
 * Yepcalphis dilectissima
 * Yepcalphis dilectissima Walker 1858
 * Yepcalphis insulicola
 * Yepcalphis insulicola Warren 1913
 * Yepcalphis limacodina
 * Yepcalphis limacodina Felder 1874
 * Yepcalphis Nye 1975
 * Yepcalphis suffusa
 * Yepcalphis suffusa Warren 1913
 * Yepcalpis dilectissima
 * Yepcalpis dilectissima (Walker, 1858)
 * Yepezia
 * Yepezia BRINDLE
 * Yepezia Brindle 1982
 * Yepezia venezuelica
 * Yepezia venezuelica Brindle 1982
 * Yepoella
 * Yepoella crassistyla
 * Yepoella crassistyla Galiano, 1970
 * Yepoella crassistylis
 * Yepoella crassistylis Galiano 1970
 * Yepoella crassistylis Galiano, 1970
 * Yepoella Galiano 1970
 * Yepoella tenuistyli
 * Yepoella tenuistyli Galiano 1970
 * Yepoella tenuistyli Galiano, 1970
 * Yerainia sophronica Rehn &amp; Hebard 1908
 * Yerana yei
 * yerba buena
 * Yerba de Bugre
 * yerba mansa
 * yerba mora
 * Yerboa
 * Yerboa Zimmermann 1777
 * Yerbua
 * Yerbua capensis
 * Yerbua capensis (Forster, 1778).
 * Yerbua Forster 1778
 * yerburyi (E. A. Smith 1891)
 * yerburyi E. A. Smith 1891
 * Yerea
 * Yerea d'Orbigny 1850
 * yergeri Shipp 1972
 * yerii (Iwasa 1934)
 * Yermakia
 * Yermakia domitor
 * Yermakia domitor Lopatin, Maschenko, Averianov, Rezvyi, Skuchas &amp; Leshchinskiy 2005
 * Yermakia Lopatin, Maschenko, Averianov, Rezvyi, Skuchas &amp; Leshchinskiy 2005
 * Yermetus
 * Yermo
 * Yermo Dorn
 * Yermo xanthocephalus
 * Yermo xanthocephalus Dorn
 * Yermo xanthocephalus Dorn, 1991
 * YermoÃ«lla
 * Yeseviidae Ozdikmen 2009
 * Yesevius
 * Yesevius acuminatus
 * Yesevius acuminatus (Ehrenberg 1838)
 * Yesevius Ozdikmen 2009
 * Yeshanaspis
 * Yeshanaspis subconicus
 * Yeshanaspis subconicus Zhu &amp; Jiang 1981
 * Yeshanaspis ZHU &amp; JIANG 1981
 * Yeshanella
 * Yeshanella Lin 1987
 * Yeshanella ovata
 * Yeshanella ovata Lin 1987
 * Yesiculariopsis
 * Yesiculariopsis Broth.
 * yesoensis Goto 1914
 * yesoensis Ishida 1993
 * yesoensis Ishida 1999
 * yesoensis Snyder 1911
 * Yesonicus
 * YEsox gymnocephalus
 * YEsox gymnocephalus Linnaeus 1758
 * yessoense
 * yessoense (Yendo) Manza 1937
 * yessoensis (Jay 1857)
 * yessoensis Jay 1857
 * yessoensis Yendo 1920
 * Yet Berthold 1827
 * Yetapa
 * Yetapa Lesson (1830-1831)
 * Yetapa Lesson 1830-1831
 * Yetapa risora
 * Yeti crab
 * Yetialtica
 * Yetialtica besucheti
 * Yetialtica besucheti Doberl 1991
 * Yetialtica Doberl 1991
 * yetii Lï¿½ffler 1968
 * Yetimeria
 * Yetimeria armata
 * Yetimeria armata Cassagnau 1984
 * Yetimeria arunensis
 * Yetimeria arunensis Cassagnau 1984
 * Yetimeria Cassagnau 1984
 * Yetimeria cervicornis
 * Yetimeria cervicornis Cassagnau 1984
 * Yetimeria cuneata
 * Yetimeria cuneata Cassagnau 1993
 * Yetimeria digitata
 * Yetimeria digitata Cassagnau 1984
 * Yetimeria elegans
 * Yetimeria elegans Cassagnau 1984
 * Yetimeria flabellifera
 * Yetimeria flabellifera Cassagnau 1984
 * Yetimeria foliata
 * Yetimeria foliata Cassagnau 1993
 * Yeuplectomorphi Jeannel 1949
 * Yezabura aegopodii
 * Yezabura aethusae
 * Yezabura aizenbergi
 * Yezabura aizenbergi Shaposhnikov 1949
 * Yezabura annulata
 * Yezabura annulata BÃ¶rner 1950
 * Yezabura annulata Steiermark
 * Yezabura anthrisci
 * Yezabura apiifolia
 * Yezabura apiifolia Theobald 1923
 * Yezabura bonomii Hille Ris Lambers 1935
 * Yezabura brancoi
 * Yezabura brancoi BÃ¶rner 1950
 * Yezabura bulbosi
 * Yezabura chaerophylli
 * Yezabura chaerophylli BÃ¶rner 1940
 * Yezabura chaerophylli BÃ¶rner, 1940
 * Yezabura chaerophylli Bï¿½rner 1940
 * Yezabura crataegi
 * Yezabura crataegi Borner 1960
 * Yezabura crataegi Kaltenbach 1843
 * Yezabura hirsutissima
 * Yezabura hirsutissima Borner 1940
 * Yezabura hirsutissima BÃ¶rner, 1940
 * Yezabura hirsutissima Bï¿½rner 1940
 * Yezabura inculta
 * Yezabura inculta Borner 1960
 * Yezabura kunzei
 * Yezabura laserpitii
 * Ygera Havlcek 1961
 * Ygera Havlicek 1961
 * Ygerodiscus
 * Ygerodiscus (?) cornutus (Davidson 1883)
 * Ygerodiscus Havlcek 1967
 * Ygerodiscus Havlicek 1967
 * Ygerodiscus novemcostatus
 * Ygerodiscus novemcostatus Havlcek 1967
 * Ygerodiscus striatocostatus
 * Ygerodiscus undulatus
 * Ygerodiscus undulatus (Salter 1848)
 * Ygerodiscus undulatus maccoyi
 * Ygerodiscus undulatus var. maccoyi (Jones 1928)
 * Ygramela maritima
 * Ygramela maritima Raf.
 * Ygramela Raf.
 * Ygramela Rafinesque 1833
 * Ygramela Rafinesque, 1833
 * ygreknotatus Schmidt 1950
 * Yhecyathus Belyaeva &amp; Yuan 1995
 * Yhecyathus futchinensis
 * Yhecyathus futchinensis Belyaeva &amp; Yuan 1995
 * Yhi Barna &amp; Thom 1991
 * Yhi Barnard &amp; Thomas 1991
 * Yhi sp mov 268
 * Yhi yindi
 * Yhi yindi Barnard &amp; Thomas 1991
 * Yhi yindi J.L. Barnard &amp; Thomas 1991
 * yhleni Malmgren 1867
 * Yiacris cyaniptera
 * Yiacris cyaniptera Zheng &amp; Chen J 1993
 * Yiacris cyaniptera Zheng &amp; Chen J, 1993
 * Yiacris cyaniptera Zheng Zhemin &amp; Chen Jun 1993
 * Yiacris cyaniptera Zheng, Z. &amp; J. Chen 1993
 * Yiacris cyaniptera Zheng, Z. &amp; J. Chen, 1993
 * Yiacris Zheng &amp; Chen 1993
 * Yiacris Zheng Zhemin &amp; Chen Jun 1993
 * Yicaris dianensis
 * Yicaris dianensis Zhang, Siveter, Waloszek &amp; Maas 2007
 * Yicaris Zhang, Siveter, Waloszek &amp; Maas 2007
 * Yichangaspis
 * Yichangaspis XIANG &amp; ZHOU 1987
 * Yichangaspis yichangensis
 * Yichangaspis yichangensis Xiang &amp; Zhou 1987
 * Yichangella
 * Yichangella ovata
 * Yichangella ovata Sun 1987
 * Yichangella Sun 1987
 * Yichangia
 * Yichangia biporosa
 * Yichangia biporosa Yin 1994
 * Yichangia biporosa Yin Leiming 1994
 * Yichangia Yin 1994
 * Yichangoceras
 * Yichangoceras Chen 1981
 * Yichangoceras Chen in Chen Liu &amp; Chen 1981
 * Yichangoceras exogastrum
 * Yichangoceras exogastrum Chen 1981
 * Yichangoceras hubeiense
 * Yichangoceras hubeiense Xu &amp; Lai 1987
 * Yichangoceras rectum
 * Yichangoceras rectum Chen 1981
 * Yichangoceras simplex
 * Yichangoceras simplex Chen 1981
 * Yichangopora
 * Yichangorthis
 * Yidalpta aequiferalis
 * Yidalpta aequiferalis (Walker 1866)
 * Yidalpta auragalis
 * Yidalpta auragalis (Guenee 1854)
 * Yidalpta auragalis GuenÃ©e 1854
 * Yidalpta auragalis Guenï¿½e 1854
 * Yidalpta flavagalis
 * Yidalpta flavagalis GuenÃ©e 1854
 * Yidalpta flavagalis Guenï¿½e 1854
 * Yidalpta Nye 1975
 * Yidalpta selenalis
 * Yidalpta selenalis Snellen 1872
 * Yidalpta selenialis
 * Yidalpta selenialis (Snellen 1872)
 * Yidalpta thetys
 * Yidalpta thetys Felder 1874
 * Yidalta
 * Yidalta auragalis
 * yidii Cossignani 2006
 * Yiduceras
 * Yiduceras elegantum
 * Yiduceras elegantum Xu &amp; Lai 1987
 * Yiduceras Xu &amp; Lai 1987
 * Yiduella
 * Yiduella simplex
 * Yiduella simplex Sun 1984
 * Yiduella Sun 1984
 * Yidunella
 * Yidunella magna
 * Yigoga (Flavyigoga)
 * Yigoga (Flavyigoga) Beck 1996
 * Yigoga (Flavyigoga) flavina (Herrich Schaeffer 1852)
 * Yigoga (Flavyigoga) flavina (Herrich-Schaeffer 1852)
 * Yigoga (Grisyigoga)
 * Yigoga (Grisyigoga) Beck 1991
 * Yigoga (Grisyiyoga) candelisequa (Denis &amp; SchiffermÃ¼ller, 1775)
 * Yigoga (Multyigoga)
 * Yigoga (Multyigoga) Beck 1999
 * Yigoga (Multyigoga) multicuspis (Eversmann 1852)
 * Yigoga (Nigryigoga)
 * Yigoga (Nigryigoga) Beck 1996
 * Yigoga (Nigryigoga) flavina (Herrich Schaeffer 1852)
 * Yigoga (Nigryigoga) flavina (Herrich-Schaeffer 1852)
 * Yigoga (Oryigoga)
 * Yigoga (Oryigoga) Beck 1999
 * Yigoga (Renyigoga)
 * Yigoga (Renyigoga) Beck 1996
 * Yigoga (Renyigoga) renigera (Huebner 1808)
 * Yigoga (Spissomides)
 * Yigoga (Spissomides) Beck 1999
 * Yigoga (Spissomides) spissilinea (Staudinger 1896)
 * Yigoga (Stenosomides) sureyae (Rebel 1931)
 * Yigoga (Stenosomides) sureyae kuhnae Hacker 1986
 * Yigoga (Trumuspis)
 * Yigoga (Trumuspis) Beck 1996
 * Yigoga (Yigoga) latipennis occidentalis Hacker 1986
 * Yigoga acutijuxta
 * Yigoga acutijuxta Boursin 1957
 * Yiinthi anzsesorum
 * Yiinthi anzsesorum Davies 1994
 * Yiinthi anzsesorum Davies, 1994
 * Yiinthi anzsesorum Todd Davies 1994
 * Yiinthi chillagoe
 * Yiinthi chillagoe Davies 1994
 * Yiinthi chillagoe Davies, 1993
 * Yiinthi chillagoe Davies, 1994
 * Yiinthi chillagoe Todd Davies 1994
 * Yiinthi Davies 1994
 * Yiinthi gallonae
 * Yiinthi gallonae Davies 1994
 * Yiinthi gallonae Davies, 1994
 * Yiinthi gallonae Todd Davies 1994
 * Yiinthi kakadu
 * Yiinthi kakadu Davies 1994
 * Yiinthi kakadu Davies, 1994
 * Yiinthi kakadu Todd Davies 1994
 * Yiinthi lycodes
 * Yiinthi lycodes (Thorell 1881)
 * Yiinthi lycodes (Thorell, 1881)
 * Yiinthi lycodes JÃ¤ger, 2001
 * Yiinthi molloyensis
 * Yiinthi molloyensis Davies 1994
 * Yiinthi molloyensis Davies, 1994
 * Yiinthi molloyensis Todd Davies 1994
 * Yiinthi spathula
 * Yiinthi spathula Davies 1994
 * Yiinthi spathula Davies, 1994
 * Yikezhaogia Li Yuhe 1984
 * Yikezhaogia megafenestrala
 * Yikezhaogia megafenestrala Li Yuhe 1984
 * Yildizia indica
 * Yildizia indica (Sarma &amp; Shyam 1974)
 * Yildizia Ozdikmen 2009
 * Yilgarnia
 * Yilgarnia currycomboides
 * Yilgarnia currycomboides Main 1986
 * Yilgarnia currycomboides Main, 1986
 * Yilgarnia linnaei
 * Yilgarnia linnaei Main 2008
 * Yilgarnia Main 1986
 * Yiliangaspis
 * Yiliangaspis LUO in LUO et al. 1994
 * Yiliangella
 * Yiliangella (Pseudoyiliangella)
 * Yiliangella (Pseudoyiliangella) hebaensis Yin 1978
 * Yiliangella (Pseudoyiliangella) xishuiensis Yin 1978
 * Yiliangella (Pseudoyiliangella) Yin 1978
 * Yiliangella Chang 1966
 * Yiliangella forficula
 * Yiliangella forficula Chang
 * Yiliangella forficula Chang 1966
 * Yiliangella hanzhongensis
 * Yiliangella hanzhongensis Zhang &amp; Lin 1980
 * Yiliangella hebaensis
 * Yiliangella mianxianensis
 * Yiliangella mianxianensis Zhang &amp; Lin 1980
 * Yiliangella nanzhengensis
 * Yiliangella nanzhengensis Zhang &amp; Lin 1980
 * Yiliangella quadrisulcata
 * Yimengia laiwuensis
 * Yimengia laiwuensis (Qi &amp; Meng 1983)
 * Yimengia Wang Jingwen 1988
 * Yimengia yani
 * Yimengia yani Wang Jingwen 1988
 * Yimengia zdanskyi
 * Yimengia zdanskyi (Lucas &amp; Schoch 1981)
 * Yimengshanoceras
 * Yimengshanoceras Chen Zou &amp; Qi in Chen, Zhou, Zou, Lin, Yang, Li, Qi, Wang, Xu &amp; Zhu 1980
 * Yimengshanoceras Chen, Zou &amp; Qi 1980
 * Yimengshanoceras longiconicum
 * Yimengshanoceras longiconicum Chen, Zou &amp; Qi 1980
 * Yimenosaurus
 * Yimenosaurus youngi
 * Yiminaspis
 * Yiminaspis Dupret 2008
 * Yiminaspis shenme
 * Yiminaspis shenme Dupret 2008
 * Yimnashana
 * Yimnashana ceylonica
 * Yimnashana ceylonica Breuning 1961
 * Yimnashana ceylonica Breuning 1979
 * Yimnashana ceylonica Breuning, 1961
 * Yimnashana ceylonica Breuning, 1979
 * Yimnashana denticulata
 * Yimnashana denticulata Gressitt 1937
 * Yimnashana denticulata Gressitt, 1937
 * Yimnashana Gressitt 1937
 * Yimnashana lungtauensis
 * Yinaspis
 * Yinaspis Chang &amp; Fan 1960
 * Yinaspis Chang 1960
 * Yinaspis Chang Wen-t'ang &amp; Fan Chia-sung 1972
 * Yinaspis granulatus
 * Yinaspis granulatus Chang &amp; Fan
 * Yinaspis granulatus Chang Wen-t'ang &amp; Fan Chia-sung 1972
 * Yinaspis ZHANG &amp; FAN 1960
 * Yinchie
 * Yinchie Yang 1978
 * Yinchie zaohui
 * Yinchie zaohui Yang 1978
 * Yindertemys
 * Yindertemys Bohlin 1946
 * Yindertemys woodi
 * Yindertemys woodi Bohlin 1946
 * Yindirtemys
 * Yindirtemys ambiguus
 * Yindirtemys ambiguus Wang 1997
 * Yindirtemys birgeri
 * Yindirtemys Bohlin 1946
 * Yindirtemys bohlini
 * Yindirtemys bohlini (Huang 1985)
 * Yindirtemys deflexus
 * Yindirtemys deflexus (Teilhard de Chardin 1926)
 * Yindirtemys gobiensis
 * Yindirtemys gobiensis (Kowalski 1974)
 * Yindirtemys grangeri
 * Yindirtemys grangeri (Bohlin 1946)
 * Yirrkala
 * Yirrkala calyptra
 * Yirrkala chaselingi
 * Yirrkala chaselingi Whitley 1940
 * Yirrkala chaselingi Whitley 1940 sec. Eschmeyer 2004
 * Yirrkala chaselingi Whitley, 1940
 * Yirrkala fusca
 * Yirrkala fusca (Zuiew 1793)
 * Yirrkala fusca (Zuiew, 1793)
 * Yirrkala gjellerupi
 * Yirrkala gjellerupi (Weber &amp; de Beaufort )
 * Yirrkala gjellerupi (Weber &amp; de Beaufort 1916)
 * Yirrkala gjellerupi (Weber &amp; de Beaufort, 1916)
 * Yirrkala gjellerupi (Weber and de Beaufort, 1916)
 * Yirrkala insolitus
 * Yirrkala insolitus McCosker 1999
 * Yirrkala insolitus McCosker 1999 sec. Eschmeyer 2004
 * Yirrkala insolitus McCosker, 1999
 * Yirrkala kaupi
 * Yirrkala kaupi (Bleeker )
 * Yirrkala kaupi (Bleeker 1858)
 * Yirrkala kaupi (Bleeker, 1858)
 * Yirrkala kaupii
 * Yirrkala kaupii (Bleeker 1858)
 * Yirrkala kaupii (Bleeker, 1858)
 * Yirrkala lumbricoides
 * Yirrkala lumbricoides (Bleeker )
 * Yirrkala lumbricoides (Bleeker 1853)
 * Yirrkala lumbricoides (Bleeker 1864)
 * Yishanaspis xiakouensis
 * Yishanaspis xiakouensis Yuan &amp; Xiang 1998
 * Yishanaspis YUAN &amp; XIANG 1998
 * Yishanophyllum
 * Yishanophyllum bellum
 * Yishanophyllum bellum Wu &amp; Liao 1988
 * Yishanophyllum Wu &amp; Liao 1988
 * Yisiona
 * Yisiona Kuoh 1981
 * Yisiona maculata
 * Yisiona maculata Kuoh 1987
 * Yisiona ziheina
 * Yisiona ziheina Kuoh 1981
 * Yisonia
 * Yitrina pellucida
 * Yixianella marginulata
 * Yixianella marginulata Zhang 1985
 * Yixianella Zhang 1985
 * Yixiangomphus
 * Yixiangomphus labius
 * Yixiangomphus labius (Lin 1976)
 * Yixiangomphus labius (Lin)
 * Yixiangomphus labius Lin
 * Yixiangomphus Lin 1986
 * Yixianornis
 * Yixianornis grabaui
 * Yixianornis grabaui Zhou &amp; Zhang 2001
 * Yixianornis Zhou &amp; Zhang 2001
 * Yixianornithidae
 * Yixianornithidae Zhou &amp; Zhang 2006
 * Yixianornithiformes
 * Yixianornithiformes Zhou &amp; Zhang 2006
 * Yixianosaurus
 * Yixianosaurus longimanus
 * Yixianosaurus longimanus Xu &amp; Wang 2003
 * Yixianosaurus Xu &amp; Wang 2003
 * Yiyangicupes Hong Youchong 1988
 * Yiyangicupes huobashanense Hong Youchong 1988
 * Yizhoubatrachus Gao &amp; Chen 2004
 * Yizhoubatrachus macilentus
 * Yizhoubatrachus macilentus Gao &amp; Chen 2004
 * Yksdarhus Hradsky &amp; Huttinger 1983
 * Yksdarhus lyneborgi
 * Yksdarhus lyneborgi Hradsky
 * Yksdarhus lyneborgi Hradsky &amp; Huttinger 1983
 * Yksdarhus lyneborgi Hradsky &amp; Huttinger, 1983
 * Ylangella Roth 2002
 * Ylangella Roth in Roth &amp; Rivault 2002
 * Ylangella truncata
 * Ylangella truncata Roth 2002
 * Ylangella truncata Roth, L. M. 2002
 * Ylangella truncata Roth, L. M., 2002
 * Ylasoia
 * Ylasoia abbreviata
 * Ylasoia abbreviata (Wiedemann 1830)
 * Ylasoia abbreviata Wiedemann
 * Ylasoia abbreviata Wiedemann 1830
 * Ylasoia abbreviata Wiedemann, 1830
 * Ylasoia caloptera
 * Ylasoia caloptera (Macquart 1834)
 * Ylasoia caloptera Macquart
 * Ylasoia caloptera Macquart 1834
 * Ylasoia caloptera Macquart, 1834
 * Ylasoia pegasus
 * Ylasoia pegasus (Wiedemann 1828)
 * Ylasoia pegasus (Wiedemann, 1828 )
 * Ylasoia pegasus Wiedemann
 * Ylasoia pegasus Wiedemann 1828
 * Ylasoia pegasus Wiedemann, 1828
 * Ylasoia secunda
 * Ylasoia secunda (Cockerell 1911)
 * Ylasoia secunda Cockerell, 1911
 * Ylasoia Speiser 1920
 * Ylasola
 * Ylasola abbreviata Wiedemann
 * Yleinen poimulehti
 * Yleuixas
 * Yleuixas bradleyi
 * Yleuixas bradleyi Viette 1951
 * Yleuixas Viette 1951
 * Yleuxas
 * Yleuxas bradleyi
 * Yleuxas bradleyi Viette 1951
 * Yleuxas Viette 1951
 * Yleyrodes
 * Yleyrodes Bink-Moenen 1983
 * Yleyrodes isoberliniae
 * Yleyrodes isoberliniae Bink-Moenen 1983
 * Yliotis Spinola 1844
 * Yllenus (Sim. )
 * Yllenus albifrons
 * Yllenus albifrons (Lucas 1846)
 * Yllenus albifrons (Lucas, 1846)
 * Yllenus albifrons PrÃ³szynski, 1968
 * Yllenus albocinctus
 * Yllenus albocinctus (Kroneberg 1875)
 * Yllenus albocinctus (Kroneberg, 1875)
 * Yllenus albocinctus Hu &amp; Wu, 1989
 * Yllenus albocinctus Ponomarev, 1978
 * Yllenus albocinctus PrÃ³szynski, 1968
 * Yllenus albocinctus Reimoser, 1919
 * Yllenus albocinctus Song, Zhu &amp; Chen, 1999
 * Yllenus algarvensis
 * Yllenus algarvensis Logunov &amp; Marusik 2003
 * Yllenus algarvensis Logunov &amp; Marusik, 2003
 * Yllenus arabicus
 * Yllenus arabicus Proszynski 1993
 * Yllenus arabicus PrÃ³szynski, 1993
 * Yllenus aralicus
 * Yllenus aralicus Logunov &amp; Marusik 2003
 * Yllenus aralicus Logunov &amp; Marusik, 2003
 * Yllenus arenarius
 * Yllenus arenarius (Sim. )
 * Yllenus arenarius Bellmann, 1997
 * Yllenus arenarius Chyzer &amp; Kulczynski, 1891
 * Yllenus arenarius Dahl, 1926
 * Yllenus arenarius Fuhn &amp; Gherasim, 1995
 * Yllenus arenarius Heimer &amp; Nentwig, 1991
 * Ylodes albicornis
 * Ylodes albicornis (Ulmer 1905)
 * Ylodes albicornis (Ulmer, 1905)
 * Ylodes calcaratus
 * Ylodes calcaratus (Martynov 1927)
 * Ylodes calcaratus (Martynov 1928)
 * Ylodes calcaratus (Martynov, 1928)
 * Ylodes canus
 * Ylodes canus (Navas 1933)
 * Ylodes canus (Navas, 1933)
 * Ylodes conspersus
 * Ylodes conspersus (Rambur 1842)
 * Ylodes conspersus (Rambur 1892)
 * Ylodes conspersus (Rambur, 1842)
 * Ylodes detruncatus
 * Ylodes detruncatus (Martynov 1924)
 * Ylodes detruncatus (Martynov, 1924)
 * Ylodes frontalis
 * Ylodes frontalis (Banks 1907)
 * Ylodes frontalis (Banks, 1907)
 * Ylodes frontalis Banks 1907
 * Ylodes frontalis Bks.
 * Ylodes frontalis N Banks 1907
 * Ylodes grisea
 * Ylodes grisea Bks.
 * Ylodes griseus
 * Ylodes griseus (Banks 1889)
 * Ylodes griseus (Banks 1899)
 * Ylodes internus
 * Ylphagus caudatus Rioja 1962
 * Ymeldia Hodges 1965
 * Ymeldia janae
 * Ymeldia janae Hodges 1965
 * Ymerana
 * Ymerana Holthe 1986
 * Ymerana pteropoda
 * Ymerana pteropoda Holthe 1986
 * Ymerana pteropoda Holthe, 1986
 * Ymiris Lund 1968
 * Ymnis Des Gozis 1886
 * Ymnis Goz 1886
 * Ymnis Gozis 1886
 * Ymnostema
 * Ymnostema Neck.
 * Ymnostemma
 * Ymnostemma Steud.
 * Ymymia americana
 * Ymymia americana Bks.
 * Ymymia amphioxus
 * Ymymia australis
 * Ymymia australis Marlier 1965
 * Ymymia Milne 1934
 * Ymymia tineiformis
 * Ynambus Agassiz 1842
 * Ynca Chevrolat 1833
 * Ynca servicollis
 * Ynca servicollis Castelnau 1840
 * Ynca servicollis Castelnau, 1840
 * Ynca tapago
 * Ynca tapago Castelnau 1840
 * Ynca tapago Castelnau, 1840
 * Yncala
 * Yncala calabarina
 * Yncala calabarina Westwood 1874
 * Yncala calabarina Westwood, 1874
 * Yndolacia lopadorrhynchoides
 * Yndolacia lopadorrhynchoides Stop-Bowitz 1987
 * Yndolacia lopadorrhynchoides StÃ¸p-Bowitz, 1987
 * Yndolacia Stop-Bowitz 1987
 * Yndolacia StÃ¸p-Bowitz 1987
 * Yndolaciella
 * Yndolaciella Buzhinskaja 2004
 * Yndolaciella polarsterni
 * Yndolaciella polarsterni Buzhinskaja 2004
 * Yndolaciidae
 * Yndolaciidae Stop-Bowitz 1987
 * Ynesa colenda
 * Ynesa colenda O. F. Cook
 * Ynesa colenda O.F. Cook
 * Ynesa colenda O.F.Cook
 * Ynesa O. F. Cook
 * Ynesa O. F. Cook, 1942
 * Ynesa O.F. Cook 1942
 * Ynesa O.F.Cook
 * Ynezidinium
 * Ynezidinium brevisulcatum
 * Ynezidinium brevisulcatum (Michoux 1985)
 * Ynezidinium latolineatum
 * Ynezidinium latolineatum (Yun 1981)
 * Ynezidinium Lucas-Clark &amp; Helenes 2000
 * Ynezidinium malloyi
 * Ynezidinium malloyi Lucas-Clark &amp; Helenes 2000
 * Ynezidinium pentahedrias
 * Ynezidinium pentahedrias (Damassa 1979)
 * Ynezidinium tazaensis
 * Ynezidinium tazaensis Slimani, Louwye, Toufiq, Verniers &amp; De Coninck 2008
 * Ynezidinium waipawaense
 * Ynezidinium waipawaense (Wilson 1988)
 * Yneziella
 * Yneziella Akpati 1966
 * Yneziella Akpati, 1966
 * Yneziella loeblichae
 * Yneziella salsipuedensis
 * Yneziella salsipuedensis Akpati 1966
 * Yneziella sliteri
 * Yngveella Poppius 1912
 * Ynites Lu 1946
 * Ynx Malherbe 1860
 * Yoania aberrans
 * Yoania aberrans Finet
 * Yoania amagiensis
 * Yoania amagiensis Nakai &amp; F.Maek.
 * Yoania amagiensis Nakai &amp; Maek.
 * Yoania amagiensis Nakai &amp; Maekawa
 * Yoania australis
 * Yoania australis Hatch
 * Yoania flava
 * Yoania flava K.Inoue &amp; T.Yukawa
 * Yoania japonica
 * Yoania japonica amagiensis
 * Yoania japonica Maxim.
 * Yoania japonica Maxim. var. amagiensis (Nakai &amp; F.Maek.) M.Hiroe
 * Yoania japonica Maxim. var. squamipes Fukuy.
 * Yoania japonica squamipes
 * Yoania japonica var. amagiensis
 * Yoania japonica var. amagiensis (Nakai &amp; F.Maek.) M.Hiroe
 * Yoania japonica var. amagiensis (Nakai &amp; F.Maekawa) Hiroe
 * Yoania japonica var. squamipes Fukuy.
 * Yoania Maxim.
 * Yoania Maximowicz 1872
 * Yoania Maximowicz, 1872
 * Yoania prainii
 * Yoania prainii King &amp; Pantl.
 * Yoania prainii King &amp; Prantl
 * Yoania sp.
 * Yoania squamipes
 * Yoania squamipes (Fuk.) Masam.
 * Yobius Chamberlin 1945
 * Yobius haywardi
 * Yobius haywardi Chamberlin 1945
 * Yochelcionella americana
 * Yochelcionella americana Runnegar &amp; Pojeta 1960
 * Yochelcionella americana Runnegar &amp; Pojeta 1980
 * Yochelcionella angustiplicata
 * Yochelcionella angustiplicata Hinz-Schallreuter 1997
 * Yochelcionella chinensis
 * Yochelcionella chinensis Pei 1985
 * Yochelcionella crassa
 * Yochelcionella crassa Zhegallo 1996
 * Yochelcionella cyrano
 * Yochelcionella cyrano Runnegar &amp; Pojeta 1974
 * Yochelcionella daleki
 * Yochelcionella daleki Runnegar &amp; Jell 1976
 * Yochelcionella fissurata
 * Yochelcionella fissurata Hinz-Schallreuter 1997
 * Yochelcionella gracilis
 * Yochelcionella gracilis Atkins &amp; Peel 2004
 * Yochelcionella greenlandica
 * Yochelcionella greenlandica Atkins &amp; Peel 2004
 * Yochelcionella ostentata
 * Yochelcionella ostentata Runnegar &amp; Jell 1976
 * Yochelcionella parva
 * Yochelcionella parva Zhegallo 1996
 * Yochelcionella pelmani
 * Yochelcionella recta
 * Yochelcionella recta Missarzhevskij 1981
 * Yochelcionella Runnegar &amp; Pojeta 1974
 * Yochelcionella Runnegar and Pojeta (1974)
 * Yochelcionella stylifera
 * Yoderimyinae
 * Yoderimyinae Wood 1955
 * Yoderimys
 * Yoderimys bumpi
 * Yoderimys bumpi Wood 1955
 * Yoderimys burkei
 * Yoderimys burkei Black 1965
 * Yoderimys lustrorum
 * Yoderimys lustrorum Wood 1974
 * Yoderimys stewarti
 * Yoderimys stewarti (Russell 1972)
 * Yoderimys Wood 1955
 * Yoderimys yarmeri
 * Yoderimys yarmeri Wilson &amp; Runkel 1991
 * Yodes
 * Yodes Kurz
 * Yodoamoeba buchii
 * Yodomia
 * Yodomia ijimai
 * Yodomia ijimai Lebwohl 1914
 * Yodomia ijimai Lebwohl, 1914
 * Yodomia Lebwohl 1914
 * Yodomia perfecta
 * Yodomia perfecta Dendy 1916
 * Yodomia perfecta Dendy, 1916
 * yodomiensis (Goto 1914)
 * yodomiensis Hayashi 1973
 * Yoga pyrops
 * Yoga pyrops (Whitley 1954)
 * Yoga pyrops (Whitley, 1954)
 * Yoga Whitley 1954
 * Yogelgnathus
 * Yogelgnathus postcampbelli
 * Yogendrotrema
 * Yogendrotrema Kumar &amp; Agarwal 1983
 * Yogendrotrema rajghatai
 * Yogendrotrema rajghatai Kumar &amp; Agarwal 1983
 * Yogeshwaria
 * Yogeshwaria Chincholikar &amp; Shinde 1976
 * Yogeshwaria malabarica
 * Yogeshwaria malabarica Shinde 1968
 * Yogeshwaria nagabhushani
 * Yogeshwaria nagabhushani Chincholikar &amp; Shinde 1976
 * Yogeshwaria Shinde 1968
 * Yogeshwaris
 * Yogetor
 * Yogetor bellus
 * Yogetor bellus Wesolowska &amp; Russell-Smith 2000
 * Yogetor bellus Wesolowska &amp; Russell-Smith, 2000
 * Yogetor spiralis
 * Yogetor spiralis Wesolowska &amp; Tomasiewicz 2008
 * Yogetor Wesolowska &amp; Russell-Smith 2000
 * Yoglinia
 * Yoglinia bergi
 * Yoglinia bergi Obruchev 1943
 * Yoglinia bergi Obruchev, 1943
 * Yohaida Argaman 1996
 * Yohoaspis
 * Yohoaspis pachycephala
 * Yohoaspis pachycephala Rasetti 1951
 * Yohoaspis RASETTI 1951
 * Yohoaspis sp
 * Yohoaspis supera
 * Yohoaspis supera Egorova
 * Yohoia
 * Yohoia plena
 * Yohoia plena Walcott 1912
 * Yohoia sinensis
 * Yohoia sinensis Luo &amp; Hu 1997
 * Yohoia sp.
 * Yohoia tennis
 * Yohoia tennis Walcott
 * Yohoia tenuis
 * Yohoia tenuis Walcott 1912
 * Yohoia Walcott 1912
 * Yohoiea
 * Yohoiea Anderson 1992
 * Yohoiida
 * Yohoiida Anderson 1992
 * Yohoiida Simonetta &amp; Delle Cave 1975
 * Yohoiidacea
 * Yohoiidacea Henriksen 1928
 * Yohophyllum
 * Yohophyllum Lin 1965
 * Yohophyllum zhejiangense
 * Yoitia
 * Yoitia Hornsch.
 * Yoka poxvirus ICTV
 * Yokenella
 * Yokenella Kosako et al. 1985
 * Yokenella Kosako, Sakazaki &amp; Yoshizaki, 1985
 * Yokenella regensburgei
 * Yokenella regensburgei Kosako et al. 1985
 * Yokogawa
 * Yokogawa Leiper 1913
 * yokohamae (Gï¿½nther 1877)
 * yokohamae Gï¿½nther 1877
 * yokohamiensis McIntosh 1885
 * Yokoia
 * Yokoia Hatai &amp; Noda 1975
 * Yokopsis
 * Yokose virus
 * Yokose virus ICTV
 * Yokose virus [AF013414] Yokose virus ICTV
 * yokotai Miura 1962
 * yokotonensis Volkmer &amp; Watanabe 1983
 * yokoyai Ahyong &amp; Poore 2004
 * Yokoyamaceras
 * Yokoyamaella
 * Yokoyamaella ( Yokoyamaella) kurohime Minato &amp; Kato 1965
 * Yokoyamaella (F.) tertioseptata (Yokoyama )
 * Yokoyamaella (Maoriphyllum)
 * Yokoyamaella (Maoriphyllum) christofi
 * Yokoyamaella (Maoriphyllum) christofi Blendinger &amp; Flugel 1990
 * Yokoyamaella (Y. ?) kaladjeracensis Minato &amp; Kato 1965
 * Yokoyamaella (Y.) carinthiaca (Heritsch )
 * Yola (Y.) bertrandi Guignot 1952
 * Yola (Y.) coellata
 * Yola (Y.) darfurensis Balfour-Browne 1947
 * Yola (Y.) decorata Guignot 1956
 * Yola (Y.) fluviatica Guignot 1952
 * Yola (Y.) marshalli
 * Yola (Y.) subopaca
 * Yola (Y.) tuberculata Reg.
 * Yola (Yola) bicristata (Sharp 1882)
 * Yola (Yolina)
 * Yola (Yolina) Guignot 1938
 * Yola (Yolula) kivuana Guignot 1958
 * Yola (Yolula) ocris Guignot 1953
 * Yola (Yolula) ocris Guignot 1954
 * Yola alluaudi
 * Yola alluaudi Pechet,1925
 * Yola assimilis
 * Yola assimilis Omer Cooper 1931
 * Yola assimilis Omer-Cooper 1931
 * Yola assimilis Omer-Cooper 1959
 * Yola babaulti
 * Yola babaulti Peschet 1921
 * Yola batekensis
 * Yola batekensis Bilardo &amp; Rocchi 2008
 * Yola bicarinata
 * Yola bicarinata (Latreille 1804)
 * Yola bicarinata (Latreille, 1804)
 * Yola bicarinata (Latreille,1804)
 * Yola bicarinata Baguena Corella 1954
 * Yoma (Doherty, MS. )
 * Yoma algina
 * Yoma algina (Boisduval, 1832)
 * Yoma algina algina Boisduval, 1832
 * Yoma algina Boisduval 1832
 * Yoma algina Fruhstorfer 1913
 * Yoma algina kokopona
 * Yoma algina kokopona Hagen, 1897
 * Yoma algina manual
 * Yoma algina manusi
 * Yoma algina netonia
 * Yoma algina netonia Fruhstorfer 1912
 * Yoma algina netonia Fruhstorfer, 1912
 * Yoma algina vestina
 * Yoma algina vestina Fruhstorfer, 1912
 * Yoma amelia
 * Yoma amelia GuÃ©rin-Meneville 1829/32
 * Yoma amelia Guï¿½rin-Meneville 1829/32
 * Yoma anak
 * Yoma anak Hall 1919
 * Yoma atomaria
 * Yoma atomaria Fruhstorfer 1912
 * Yoma australis
 * Yoma australis Fruhstorfer 1899
 * Yoma diomea serica
 * Yoma diomea serica Tsukada, Nishiyama &amp; Kaneko 1985
 * Yoma Doh 1886
 * Yoma Doherty 1886
 * Yoma foliacea
 * Yonagunia formosana
 * Yonagunia formosana (Okamura) Kawaguchi &amp; Masuda
 * Yonagunia formosana (Okamura) Kawaguchi &amp; Masuda, 2004
 * Yonagunia Kawaguichi &amp; Masuda 2004
 * Yonagunia S. Kawaguchi &amp; M. Masuda in S. Kawaguchi et al. 2004
 * Yonagunia tenuifolia
 * Yonagunia tenuifolia Kawaguchi &amp; Masuda
 * Yonagunia tenuifolia Kawaguchi &amp; Masuda, 2004
 * yonaguniensis (Nunomura 1990A)
 * yonaguniensis Nunomura 1990A
 * yonakuniensis (Yamada &amp; T. Tanaka) Itono
 * yonakuniensis Nunomura 1986
 * yonakuniensis Segi
 * Yonedaella
 * Yonedaella I. Umezaki 1962
 * Yonedaella I. Umezaki, 1962
 * Yonedaella lithophila
 * Yonedaella lithophila (A. Ercegovic}) I. Umezaki
 * Yonedaella lithophila (ErcegoviÄ‡) I. Umezaki, 1962
 * Yoneoara
 * Yoneoara cross
 * Yoneoara hort.
 * Yoneoara Hort. 1972
 * Yoneoara Hort., 1972
 * Yoneoara Horticultural cross
 * yoneshigueana Gurgel, Fredericq &amp; J. Norris 2004
 * Yonezawaara
 * Yonganospira
 * Yonganospira (Bohaispirella)
 * yookadai Sakai 1933
 * Yooloa
 * Yooloa Argaman 1994
 * Yooloa vircola
 * Yooloa vircola Argaman 1994
 * Yooloini
 * Yooloini Argaman 1994
 * yoorugurrum S. Murray et Patterson 2002
 * Yoospira
 * Yoospira acuta
 * Yoospira acuta Bandel 2002
 * Yoospira Bandel 2002
 * Yoospira knighti
 * Yoospira knighti Bandel 2002
 * Yoospira minutissima
 * Yoospira minutissima (Yoo 1994)
 * Yoospira morgantownensis
 * Yoospira morgantownensis Bandel 2002
 * Yoraperla altaica
 * Yoraperla altaica Devyatkov 2003
 * Yoraperla altaica Devyatkov, 2003
 * Yoraperla brevis
 * Yoraperla brevis (Banks 1907)
 * Yoraperla brevis (Banks, 1907)
 * Yoraperla brevis Banks
 * Yoraperla han
 * Yoraperla han Stark &amp; C.R. Nelson 1994
 * Yoraperla han Stark &amp; C.R. Nelson, 1994
 * Yoraperla han Stark &amp; Nelson 1994
 * Yoraperla mariana
 * Yoraperla mariana (Ricker 1943)
 * Yoraperla mariana (Ricker, 1943)
 * Yoraperla mariana Ricker
 * Yoraperla nigrisoma
 * Yoraperla nigrisoma (Banks 1948)
 * Yoraperla nigrisoma (Banks, 1948)
 * Yoraperla nigrisoma Banks
 * Yoraperla Ricker 1952
 * Yoraperla Ricker, 1952
 * Yoraperla siletz
 * Yoraperla siletz Stark &amp; C.R. Nelson 1994
 * Yoraperla siletz Stark &amp; C.R. Nelson, 1994
 * Yoraperla siletz Stark &amp; Nelson
 * Yoraperla siletz Stark &amp; Nelson 1994
 * Yoraperla siletz Stark and Nelson, 1994
 * Yoraperla uchidai
 * Yoraperla uchidai Stark &amp; C.R. Nelson 1994
 * Yosemetia Hulst 1903
 * Yosemetia maidella
 * Yosemite buckthorn
 * Yosemite rockcress
 * Yosemitea
 * Yosemitea Boucek 1993
 * Yosemitea latifrons
 * Yosemitea latifrons Boucek
 * Yosemitea latifrons Boucek 1993
 * Yosemitea latifrons Boucek, 1993
 * Yosemitia
 * Yosemitia didactica
 * Yosemitia didactica Dyar 1914
 * Yosemitia fieldiella
 * Yosemitia fieldiella (Dyar 1913)
 * Yosemitia graciella
 * Yosemitia graciella (Hulst 1887)
 * Yosemitia longipennella
 * Yosemitia longipennella (Hulst 1888)
 * Yosemitia maculicula
 * Yosemitia maculicula Dyar 1913
 * Yosemitia maidella
 * Yosemitia maidella Dyar 1905
 * Yosemitia mysiella
 * Yosemitia mysiella Dyar 1905
 * Yosemitia Ragonot 1901
 * yoshi (Snyder 1909)
 * yoshi Snyder 1909
 * yoshiae Kanazawa 1952
 * Yotala
 * Yotala boliviana
 * Yotala boliviana Melich.
 * Yotala boliviana Melichar 1925
 * Yotala Melichar 1924
 * Yotala Melichar 1925
 * Yothima
 * Yothima yayeyamana
 * Yotis
 * Yotis keeni septrionalis
 * Yotvata
 * Yotvata (Godataira)
 * Yotvata (Godataira) carinata
 * Yotvata (Godataira) carinata Linnavuori 2004
 * Yotvata (Godataira) ectagela
 * Yotvata (Godataira) ectagela Linnavuori 1975
 * Yotvata (Godataira) hadibo
 * Yotvata (Godataira) hadibo Linnavuori 1994
 * Yotvata (Godataira) hawtana
 * Yotvata (Godataira) hawtana Linnavuori 1986
 * Yotvata (Godataira) Linnavuori 1975
 * Yotvata (Godataira) pulcherrima
 * Yotvata (Godataira) pulcherrima Linnavuori 1984
 * Yotvata (Godataira) salmana
 * Yotvata (Godataira) salmana Linnavuori 1984
 * Yotvata (Yotvata)
 * Yotvata (Yotvata) albocunealis
 * Yotvata (Yotvata) albocunealis Linnavuori 1986
 * Yotvata (Yotvata) erifyle
 * Youcai mosaic virus ICTV
 * Youcai mosaic virus [D38444] Youcai mosaic virus-Cg ICTV
 * Youcai mosaic virus [NC_004422] Youcai mosaic virus ICTV
 * Yougatroglops robusticornis
 * Yougatroglops robusticornis Wittmer 1989
 * Youldiella
 * Young rabbit
 * Youngacanthus
 * Youngacanthus gracilis
 * Youngacanthus gracilis Wang Nianzhong 1984
 * Youngacanthus Wang Nianzhong 1984
 * Youngaia
 * Youngaia Boucek 1974
 * Youngaia spinosa
 * Youngaia spinosa Boucek
 * Youngaia spinosa Boucek 1974
 * Youngaia spinosa Boucek, 1974
 * Youngalidia
 * Youngalidia unica Nielson
 * Youngama
 * Youngama Ahmed 1969
 * Youngama spinistyla
 * Youngama spinistyla Ahmed 1969
 * Youngaphodius
 * Youngaphodius agullasi
 * Youngaphodius agullasi Endrodi 1983
 * Youngaphodius agullasi Endrodi, 1983
 * Youngaphodius agullasi Endrï¿½di 1983
 * Youngaphodius Bordat 1988
 * Yoyarria puelchana
 * Yoyarria puelchana Rusc.
 * Yoyarria puelchana Rusconi 1955
 * Yoyarria RUSCONI 1955
 * Yoyuteris
 * Yoyuteris ballator
 * Yoyuteris ballator Otte 2006
 * Yoyuteris ballator Otte, D. 2006
 * Yoyuteris ballator Otte, D., 2006
 * Yoyuteris barahona
 * Yoyuteris barahona Ruiz Baliu &amp; Otte 1997
 * Yoyuteris barahona RuÃ­z-BaliÃº &amp; D. Otte 1997
 * Yoyuteris barahona RuÃ­z-BaliÃº &amp; D. Otte, 1997
 * Yoyuteris barahona RuÃ­z-BaliÃº &amp; Otte 1997
 * Yoyuteris barahona RuÃ­z-BaliÃº &amp; Otte, 1997
 * Yoyuteris barahona Ruï¿½z-Baliï¿½ &amp; D. Otte 1997
 * Yoyuteris epiroticos
 * Yoyuteris epiroticos Otte 2006
 * Yoyuteris epiroticos Otte, D. 2006
 * Yoyuteris epiroticos Otte, D., 2006
 * Yoyuteris palmamochensis
 * Yoyuteris palmamochensis Ruiz Baliu &amp; Otte 1997
 * Yoyuteris palmamochensis RuÃ­z-BaliÃº &amp; D. Otte 1997
 * Yoyuteris palmamochensis RuÃ­z-BaliÃº &amp; D. Otte, 1997
 * Yoyuteris palmamochensis RuÃ­z-BaliÃº &amp; Otte 1997
 * Yoyuteris palmamochensis RuÃ­z-BaliÃº &amp; Otte, 1997
 * Yoyuteris palmamochensis Ruï¿½z-Baliï¿½ &amp; D. Otte 1997
 * Yoyuteris Ruiz Baliu &amp; Otte 1997
 * Yoyuteris RuÃ­z-BaliÃº &amp; Otte 1996
 * Yozia bicoarclata erythraensis
 * Yozia bicoarclata erythraensis Dollfus &amp; Petit
 * Yozia bicoarctata
 * Yozia bicoarctata (Bleeker )
 * Yozia bicoarctata (Bleeker 1857)
 * Yozia bicoarctata (Bleeker)
 * Yozia bicoarctata (Bleeker, 1857)
 * Yozia bicoarctata erythraeensis
 * Yozia bicoarctata erythraeensis Dollfus &amp; Petit, 1938
 * Yozia bicoarctata erythraeensis Dollfus 1938
 * Yozia bicoarctata melanesiae
 * Yozia bicoarctata melanesiae Fowler 1945
 * Yozia bicoarctata melanesiae Fowler, 1945
 * Yozia bicoarctata subsp. erythraeensis
 * Yozia bicoarctata subsp. erythraeensis Dollfus &amp; Petit 1938
 * Yozia bicoarctata subsp. erythraeensis Dollfus &amp; Petit 1938 sec. Eschmeyer 2004
 * Yozia bicoarctata subsp. erythraeensis Dollfus &amp; Petit, 1938
 * Yozia bicoarctata subsp. melanesiae
 * Yozia bicoarctata subsp. melanesiae Fowler 1945
 * Yozia bicoarctata subsp. melanesiae Fowler 1945 sec. Eschmeyer 2004
 * Yozia bicoarctata subsp. melanesiae Fowler, 1945
 * Yozia bicoarctatus
 * Yozia bicoartata
 * Yozia bioarctata
 * Yozia bioarctata (Bleeker 1857)
 * Yozia bioarctata (Bleeker, 1857)
 * Yozia compitalis
 * Yozia compitalis samaraiensis
 * Yozia compitalis samaraiensis Kahsbauer 1970
 * Ypanema castnioides
 * Ypanema castnioides Buchecker 1880
 * Ypanema champaquiensis
 * Ypanema champaquiensis Breyer 1929
 * Ypanema cinerascens
 * Ypanema cinerascens Houlbert 1917
 * Ypanema decussata
 * Ypanema decussata Godard 1824
 * Ypanema discoidalis
 * Ypanema discoidalis Buchecker 1880
 * Ypanema flavidior
 * Ypanema flavidior Strand 1919
 * Ypanema fulvipyga
 * Ypanema fulvipyga Strand 1913
 * Ypanema godarti
 * Ypanema godarti MÃ©nÃ©triÃ©s 1857
 * Ypanema godarti Mï¿½nï¿½triï¿½s 1857
 * Ypanema Houlb.
 * Ypanema Houlbert 1918
 * Ypanema hubneri
 * Ypanema hubneri Gray
 * Ypanema huebneri
 * Ypanema huebneri Latreille 1830
 * Ypanema impura
 * Ypanema impura Strand 1913
 * Ypanema indecora
 * Ypanema indecora Strand 1913
 * Ypanema ochreifascia
 * Ypanema ochreifascia Joicey &amp; Talbot
 * Yphantes Vieillot 1816
 * Yphanthes
 * Yphanthes Vieillot 1822
 * Yphantornis
 * Yphantornis Des Murs 1854
 * Yphantornis Des Murs [1854]
 * Yphomyrmex
 * Yphomyrmex Santschi 1911
 * Yphria
 * Yphria californica
 * Yphria californica (Banks 1907)
 * Yphria californica (Banks, 1907)
 * Yphria californica (Phrygan. )
 * Yphria californica Banks
 * Yphria californica N Banks 1907
 * Yphria Milne
 * Yphria Milne 1934
 * Yphria Milne, 1934
 * Yphriina
 * Yphriina Wiggins 1962
 * Yphriinae
 * Yphriinae Wiggins 1962
 * Yphriinae Wiggins, 1962
 * Yphthima
 * Yphthima albescens
 * Yphthima albida
 * Yphthima alemola
 * Yphthima argus
 * Yphthima batesii
 * Ypiranga anthophila Mello-Leitao 1926
 * Ypiranga do
 * Ypiranga do Rego-Barros 1959
 * Ypiranga Mello-LeitÃ£o 1922
 * Ypiranga nigrorubia Rego Barros 1959
 * Ypiranga nigrorubra
 * Ypiranga nigrorubra Rego Barros 1959
 * Ypiranga Rego Barros 1959
 * Ypiranga Rego-Barros 1959
 * Ypiranga ypiranga
 * Ypiranga ypiranga Mello-Leitao 1922
 * Ypirangathemis
 * Ypirangathemis calverti
 * Ypirangathemis calverti Dias dos Santos 1945
 * Ypirangathemis calverti Santos 1945
 * Ypirangathemis calverti Santos, 1945
 * Ypirangathemis Dias dos Santos 1945
 * Ypirangathemis Santos, 1945
 * Ypkria Milne
 * Yplhima albida unifomis Dufrane 1945
 * Yplhima hubneri
 * Ypoceriti Lioy, 1895
 * ypoleucus Armenante 1903
 * Ypomaea
 * Ypomaea C.C. Robin
 * Ypomaea Robin
 * Ypomeneuta
 * Ypomeneuta Eversmann 1844
 * Ypomeneuta haemorrhoidella
 * Ypomeneuta haemorrhoidella Eversmann 1844
 * Ypomeneuta quadripunctella
 * Ypomeneuta quadripunctella Eversmann 1844
 * Ypomomeuta yanagawanus
 * Yponemeuta martinella
 * Yponemeuta martinella (Walker 1863)
 * Yponomeuta
 * Yponomeuta aenothriella
 * Yponomeuta afflictella
 * Yponomeuta afflictella (Walker 1864)
 * Yponomeuta africana
 * Yponomeuta africana Stainton 1862
 * Yponomeuta alba
 * Yponomeuta alba Dufrane 1960
 * Yponomeuta albonigratus
 * Yponomeuta albonigratus Gershenzon 1972
 * Yponomeuta albonlgratus
 * Yponomeuta albonlgratus Gershenzon 1972
 * Yponomeuta alienella
 * Yponomeuta alienella Walker 1863
 * Yponomeuta alienellus
 * Ypresiomyrma Archibald, Cover &amp; Moreau 2006
 * Ypresiomyrma bartletti
 * Ypresiomyrma bartletti Archibald, Cover &amp; Moreau
 * Ypresiomyrma bartletti Archibald, Cover &amp; Moreau 2006
 * Ypresiomyrma orbiculata
 * Ypresiomyrma orbiculata Archibald, Cover &amp; Moreau
 * Ypresiomyrma orbiculata Archibald, Cover &amp; Moreau 2006
 * Ypresiomyrma rebekkae
 * Ypresiomyrma rebekkae (Rust &amp; Andersen 1999)
 * Ypresiomyrma rebekkae (Rust &amp; MÃ¸ller Andersen)
 * Ypselogonia decens
 * Ypselogonia decens Kleine 1932
 * Ypselogonia drescheri
 * Ypselogonia drescheri Kleine 1938
 * Ypselogonia guttata
 * Ypselogonia guttata Kleine 1928
 * Ypselogonia Kleine 1922
 * Ypselogonia peregrina
 * Ypselogonia peregrina Kleine 1922
 * Ypsia
 * Ypsia aeruginosa
 * Ypsia aeruginosa Guenee 1852
 * Ypsia exaggerate
 * Ypsia glycon
 * Ypsia glycon Schaus 1914
 * Ypsia GuenÃ©e 1852
 * Ypsia lineata
 * Ypsigramma
 * Ypsigramma africanum
 * Ypsigramma africanum (Smith 1954)
 * Ypsigramma africanum (Smith, 1954)
 * Ypsigramma brocki
 * Ypsigramma brocki Schultz 1953
 * Ypsigramma brocki Schultz 1953 sec. Eschmeyer 2004
 * Ypsigramma brocki Schultz, 1953
 * Ypsigramma lineata
 * Ypsigramma lineata Schultz 1953
 * Ypsigramma lineata Schultz 1953 sec. Eschmeyer 2004
 * Ypsigramma lineata Schultz, 1953
 * Ypthima (Thymipa) sepyra weedae Tennent &amp; Rawlins 2007
 * Ypthima abnormis
 * Ypthima abnormis Shelford
 * Ypthima abnormis Shelford 1904
 * Ypthima aeigma
 * Ypthima aeigma ShirÃ´zu &amp; Shima 1977
 * Ypthima aeigma Shirï¿½zu &amp; Shima 1977
 * Ypthima affectata
 * Ypthima affectata Elwes &amp; Edwards 1893
 * Ypthima akbar
 * Ypthima akbar Talbot 1947
 * Ypthima akragas
 * Ypthima akragas akragas
 * Ypthima akragas akragas Fruhstorfer 1911
 * Ypthima akragas Fruhstorfer
 * Ypthima akragas Fruhstorfer 1911
 * Ypthima akragas Matsumura 1929
 * Ypthima akragas perfectoides
 * Ypthima akragas perfectoides Uemura &amp; Koiwaya 2001
 * Ypthima akragas takamukuana
 * Ypthima akragas var. takamukuana Matsumura 1919
 * Ypthima alada
 * Ypthima alada Fruhstorfer 1911
 * Ypthima albescens
 * Ypthima albescens Poujade 1885
 * Ypthima albida
 * Ypthima albida albida
 * Ypthima albida albida Butler 1888
 * Ypthima albida argentata
 * Ypypuera crucifera
 * Ypypuera crucifera (Vellard 1924)
 * Ypypuera crucifera (Vellard, 1924)
 * Ypypuera esquisita
 * Ypypuera esquisita Rheims &amp; Brescovit 2004
 * Ypypuera esquisita Rheims &amp; Brescovit, 2004
 * Ypypuera Rheims &amp; Brescovit 2004
 * Ypypuera vittata
 * Ypypuera vittata (Simon 1887)
 * Ypypuera vittata (Simon, 1887)
 * Ypyrgula
 * Ypyrgula Radoman 1955
 * Ypzia bicoarctata
 * Ypzia bicoarctata (Bleeker 1857)
 * Ypzia bicoarctata (Bleeker, 1857)
 * Ypzia Jordan &amp; Snyder 1901 [presumed]
 * Yraguara
 * Yraguara annulipes Mello-Leitao 1937
 * Yraguara fleuryi
 * Yraguara fleuryi Soares 1943
 * Yraguara Mello-LeitÃ£o 1937
 * yraidae (San Martï¿½n 1984)
 * yraidae San Martï¿½n 1984
 * Yramea
 * Yramea anna
 * Yramea anna Blanch.
 * Yramea blancasi
 * Yramea blancasi Hayward 1960
 * Yramea cytheria cytheria
 * Yramea cytheris
 * Yramea cytheris Drury
 * Yramea cytheris Hb.
 * Yramea darwini
 * Yramea darwini Staud.
 * Yramea dexamene
 * Yramea dexamene Boisd.
 * Yramea dexamine
 * Yramea dexamine Boisd.
 * Yramea inca
 * Yramea inca (Staudinger, 1894)
 * Yramea l. cytheris
 * Yramea lathonioides
 * Yramea lathonioides Blanch.
 * Yramea lynx
 * Yramea lynx Lamas &amp; Grados 2004
 * Yrbozoon conspicuum
 * Yrbozoon conspicuum (Powell 1967)
 * Yrbozoon conspicuum (Powell, 1967) E
 * Yrbozoon Gordon 1989
 * Yrbozoon n. sp. 1* F127 E
 * Yrbozoon n. sp. 2* Stn E
 * Yrbozoon n. sp. 3* Kah0204/27 E
 * Yrbozoon n. sp. 4* Kah0204/32 E
 * Yrbozoon ringens
 * Yrbozoon ringens Gordon 1989
 * Yrbozoon ringens Gordon, 1989
 * Yrctospirifer Gatinaud 1949
 * Yrdops Steffan 1961
 * Yresia alecto Topsent
 * Yresia dispar
 * Yresia dispar Topsent 1927
 * Yrias albiciliatus
 * Yrias albiciliatus Smith 1903
 * Yrias albidiscata
 * Yrias albidiscata Schaus 1901
 * Yrias barata
 * Yrias barata Schaus 1901
 * Yrias brunca
 * Yrias brunca Schaus 1901
 * Yrias chlorolimbis
 * Yrias chlorolimbis Moschler 1880
 * Yrias clientis
 * Yrias clientis Grote 1883
 * Yrias corvita
 * Yrias corvita Schaus 1901
 * Yrias corvitu
 * Yrias crespula
 * Yrias crespula Moschler 1880
 * Yrias crudelis
 * Yrias crudelis Grote 1883
 * Yrias GuenÃ©e 1852
 * Yrias irentis
 * Yrias irentis Smith 1905
 * Yrias mollis
 * Yrias mollis Moschler 1880
 * Yrias noctar
 * Yrias noctar Schaus 1901
 * Yrias pardalis
 * Yrias pardalis Smith 1908
 * Yrias porphyrascens
 * Yrka Boucek 1988
 * Yrka dahmsi
 * Yrka dahmsi Boucek
 * Yrka dahmsi Boucek 1988
 * Yrka dahmsi Boucek, 1988
 * Yrrhapta cervina
 * Yrrhapta cervina (SjÃ¶stedt 1921)
 * Yrrhapta cervina (SjÃ¶stedt, 1921)
 * Yrrhapta cervina (Sjï¿½stedt 1921)
 * Yrrhapta hyalina
 * Yrrhapta hyalina (Sjostedt 1930)
 * Yrrhapta hyalina (SjÃ¶stedt, 1930)
 * Yrrhapta semitibialis
 * Yrrhapta semitibialis (Sjostedt 1934)
 * Yrrhapta semitibialis (SjÃ¶stedt, 1934)
 * Yrrhapta Sjoestedt 1921
 * Yrrhapta Sjostedt 1921
 * Yrrhapta sp. 2
 * Yrrhapta sp. 3
 * Yrrhapta striata
 * Yrrhapta striata Key 1986
 * Yrrhapta striata Key, 1986
 * Yrrhapta striata SjÃ¶stedt 1921
 * Yrrhapta striata SjÃ¶stedt, 1921
 * Yrrhapta striata Sjï¿½stedt 1921
 * Yrrhiza
 * Yrrhiza de Laubenfels 1955
 * Yrrhiza de Laubenfels 1957
 * Yrula Milne 1934
 * Ysaria eleutheratorum Necs.
 * Ysaria sphecophila Ditmar
 * Ysengrinia americana
 * Ysengrinia americana (Wortman 1901)
 * Ysengrinia depereti
 * Ysengrinia gerandiana
 * Ysengrinia gerandiana (Viret 1929)
 * Ysengrinia Ginsburg 1965
 * Ysengrinia Ginsburg 1966
 * Ysengrinia ginsburgi
 * Ysengrinia ginsburgi Morales, Pickford, Soria &amp; Fraile 1998
 * Ysengrinia ginsburgi Morales, Pickford, Soria et al. 1998
 * Ysengrinia tolosana
 * Ysengrinia valenciana
 * Ysengrinia valenciana Belinchon Garcia 1988
 * Ysengrinia valentiana
 * Ysengrinia valentiana Belinchon &amp; Morales 1989
 * Ysengriniini
 * Ysengriniini Heizmann &amp; Kordikova 2000
 * yserense (Meunier 1919) Balech 1974
 * Yseria
 * Yseria californica
 * Yseria californica Gedoelst 1919
 * Yseria coronata
 * Yseria coronata (Molin )
 * Yseria decora
 * Yseria decora (Duj. )
 * Yseria Gedoelst 1919
 * Yseria quadripartita
 * Ysideria hastata
 * Ysideria hastata Ruff 1995
 * Ysideria hastata Ruff in Blake, Hilbig &amp; Scott, 1995
 * Ysideria Ruff 1995
 * Ysideria Ruff in Blake, Hilbig &amp; Scott 1995
 * Ysila
 * Ysila de Laubenfels 1936
 * Ysila schmidti
 * Ysila schmidti (Arnesen 1903)
 * Ysila schmidti (Arnesen, 1903)
 * Ysilothuria
 * Ysiphonia
 * Ysiphonia de Laubenfels 1936
 * Ysogomphodon Poey 1868
 * Ysopogon
 * Ysopogon Bigot 1857
 * Ysopogon parvulus
 * Ysopogon parvulus Bigot
 * Ysopogon parvulus Bigot 1859
 * Ysopogon parvulus Bigot, 1859
 * Yssichromis &quot;argens
 * Yssichromis &quot;argens&quot;
 * Yssichromis argens
 * Yssichromis coop
 * Yssichromis fusiformis
 * Yssichromis fusiformis (Greenwood &amp; Gee 1969)
 * Yssichromis fusiformis (Greenwood &amp; Gee, 1969)
 * Yssichromis Greenwood 1980
 * Yssichromis Greenwood 1980 sec. Eschmeyer 1998
 * Yssichromis Greenwood 1980 sec. Eschmeyer 2004
 * Yssichromis heusinkveldi
 * Yssichromis heusinkveldi (Witte &amp; Witte-Maas 1987)
 * Yssichromis heusinkveldi (Witte &amp; Witte-Maas, 1987)
 * Yssichromis heusinkveldi Witte &amp; Witte-Maas, 1987
 * Yssichromis laparogramma
 * Yssichromis laparogramma (Greenwood &amp; Gee 1969)
 * Yssichromis laparogramma (Greenwood &amp; Gee, 1969)
 * Yssichromis pappenheimi
 * Yssichromis pappenheimi (Boulenger 1914)
 * Yssichromis pappenheimi (Boulenger, 1914)
 * Yssichromis pyrrhocephalus
 * Yssichromis pyrrhocephalus (Witte &amp; Witte-Maas 1987)
 * Yssichromis pyrrhocephalus (Witte &amp; Witte-Maas, 1987)
 * Yssichromis pyrrocephalus
 * Yssichromis silver-bullet
 * Yssichromis yellow-black
 * Ystia
 * Ystia Compere
 * Ystia CompÃ¨re 1963
 * Ystia CompÃ¨re, 1963
 * Ystia stagnina
 * Ystia stagnina CompÃ¨re
 * Ystrixoxygymna
 * Ystrixoxygymna fusicornis
 * Ystrixoxygymna fusicornis Pace 1999
 * Ystrixoxygymna Pace 1999
 * Ytu angra
 * Ytu angra Reichardt &amp; Vanin 1977
 * Ytu artemis
 * Ytu artemis Reichardt 1973
 * Ytu athena
 * Ytu athena Reichardt 1973
 * Ytu brutus
 * Ytu brutus Spangler 1980
 * Ytu cleideae
 * Ytu cleideae Vanin 1991
 * Ytu cupidus
 * Ytu cupidus Reichardt 1973
 * Ytu cuyaba
 * Ytu cuyaba Reichardt &amp; Vanin 1977
 * Ytu demeter
 * Ytu demeter Reichardt 1973
 * Ytu godoyi
 * Ytu godoyi Reichardt &amp; Vanin 1977
 * Ytu hephaestus
 * Ytu hephaestus Reichardt 1973
 * Ytu itati
 * Ytu itati Reichardt &amp; Vanin 1977
 * Ytu mirandus
 * Ytu mirandus Reichardt &amp; Vanin 1977
 * Ytu mirim
 * Ytu mirim Reichardt &amp; Vanin 1977
 * Ytu morpheus
 * Ytu morpheus Reichardt 1973
 * Ytu phebo
 * Yua austro-orientalis
 * Yua austro-orientalis (F.P. Metcalf) C.L. Li
 * Yua austro-orientalis (F.P.Metcalf) C.L.Li
 * Yua austroorientalis
 * Yua austroorientalis (Metcalf) C.L.Li
 * Yua C. L. Li
 * Yua C. L. Li, 1990
 * Yua C.L. Li 1990
 * Yua C.L.Li
 * Yua chinensis
 * Yua chinensis C.L. Li
 * Yua chinensis C.L.Li
 * Yua thomsonii
 * Yua thomsonii (Laws.) C.L.Li
 * Yua thomsonii (Laws.) C.L.Li var. glaucescens (Diels &amp; Gilg) C.L.Li
 * Yua thomsonii (Lawson) C.L. Li
 * Yua thomsonii (Lawson) C.L. Li var. glaucescens (Diels &amp; Gilg) C.L. Li
 * Yua thomsonii (Lawson) C.L. Li var. thomsonii
 * Yua thomsonii (M. A. Lawson) C. L. Li
 * Yua thomsonii glaucescens
 * Yua thomsonii thomsonii
 * Yua thomsonii var. glaucescens
 * Yua thomsonii var. glaucescens (Diels &amp; Gilg) C.L.Li
 * Yuadorgus
 * Yuadorgus UÃ©no 1953
 * Yuadorgus UENO 1955
 * Yuadorgus uozumii
 * Yuadorgus uozumii Ueno 1953
 * Yuanaia
 * Yubaria Ogura 1932
 * Yubaria Ogura, 1932
 * Yubariceras
 * Yubariceras fujishimai
 * Yubariceras fujishimai Matsumoto 1975
 * Yubariceras gosavicum
 * Yubariceras gosavicum Wiedmann 1979
 * Yubariceras japonicum
 * Yubariceras japonicum Matsumoto, Saito &amp; Fukada 1957
 * Yubariceras Matsumoto, Saito &amp; Fukada 1957
 * Yubariceras pseudomphalum
 * Yubariceras pseudomphalum Matsumoto 1975
 * Yubariceras yubarense
 * Yubeldus
 * Yubeldus glandulosus
 * Yubeldus glandulosus Khan, Azmi &amp; Chawla 1979
 * Yubeldus Khan Azmi &amp; Chawla 1979
 * Yubeldus Khan, Azmi &amp; Chawla 1979
 * Yubilarium
 * Yubilarium Morosov 1958
 * Yucanda albida
 * Yucanda albida (Ball 1909)
 * Yucanda albida (Ball, 1909)
 * Yucanda Ball &amp; Hartzell 1922
 * Yucanda miniata
 * Yucanda miniata Ball 1937
 * Yucanda miniata Ball, 1937
 * Yucanda ornata
 * Yucanda ornata Ball 1937
 * Yucanda ornata Ball, 1937
 * Yucaratonia
 * Yucaratonia brenningii
 * Yucaratonia brenningii (Harms) Burkart
 * Yucaratonia brenningii (Harms) Lavin
 * Yucaratonia brenningii (Harms)Burkart
 * Yucaratonia Burkart
 * Yucaratonia Burkart 1969
 * Yucaratonia Burkart, 1969
 * Yucatalana
 * Yucatalana Botosaneanu &amp; Iliffe 1999
 * Yucatalana robustispina
 * Yucatalana robustispina Botosaneanu &amp; Iliffe 1999
 * Yucatan nakedwood
 * Yucatan sage
 * yucatana Botosaneanu &amp; Iliffe 2000
 * yucatanensis (Bigelow &amp; Schroeder 1950)
 * yucatanensis (Mulaik 1960)
 * yucatanensis Bigelow &amp; Schroeder 1950
 * yucatanensis Cairns 1986
 * Yudaiella formosa
 * Yudaiella formosa Zhang &amp; Hua 2000
 * Yudaiella Zhang &amp; Hua 2000
 * Yudaiella Zhang &amp; Hua in Hua, Zhang, Zhang &amp; Wang 2000
 * Yudjaicyathus
 * Yudjaicyathus astashkini
 * Yudjaicyathus astashkini Zhuravlev 1983
 * Yudjaicyathus Zhuravlev 1983
 * Yudjaicyathus Zhuravlev in Zhuravlev Zhuravleva &amp; Fonin 1983
 * Yudnapinna
 * Yudnapinna radicalis
 * Yudnapinna radicalis Williams 1985
 * Yudnapinna radicalis Williams, 1985
 * Yudnapinna Williams 1985
 * Yudomia
 * Yudomia tera
 * Yudomia tera Laz.
 * Yudopodisma
 * Yudopodisma Zhang &amp; Xia 1990
 * Yuea chusqueicola
 * Yuea chusqueicola O.E. Erikss. 2003
 * Yuea O.E. Erikss. 2003
 * Yuea O.E. Eriksson 2003
 * Yueaphis
 * Yueaphis fushunensis
 * Yueaphis fushunensis Wang 1993
 * Yueaphis Wang 1993
 * Yuehsienszella
 * Yuehsienszella Chang 1957
 * Yuehsienszella ichangensis
 * Yuehsienszella ichangensis Chang
 * Yuehsienszella ichangensis Chang 1964
 * Yuehsienszella szechuanensis
 * Yuehsienszella szechuanensis (Lun )
 * Yuehsienszella szechuanensis (Sun )
 * Yuehsienszella szechuanensis (Sun 1939)
 * Yuehsienszella yangqiaoensis
 * Yuehsienszella yangqiaoensis Lee 1978
 * Yuehsienszella ZHANG 1957
 * Yuehsienzella
 * Yuehsienzella sp
 * Yuehsieszella
 * Yuelophus
 * Yuelophus validus
 * Yuelophus validus Zhang 1978
 * Yuelophus Zhang 1978
 * Yuen
 * Yuen elegans
 * Yugus
 * Yugus arinus
 * Yugus arinus (Frison )
 * Yugus arinus (Frison 1942)
 * Yugus arinus (Frison)
 * Yugus arinus (Frison, 1942)
 * Yugus arinus Frison
 * Yugus bulbosus
 * Yugus bulbosus (Frison )
 * Yugus bulbosus (Frison 1942)
 * Yugus bulbosus (Frison)
 * Yugus bulbosus (Frison, 1942)
 * Yugus bulbosus Frison
 * Yugus kirchneri
 * Yugus kirchneri Nelson 2001
 * Yugus kirchneri Nelson, C.H. 2001
 * Yugus kirchneri Nelson, C.H., 2001
 * Yugus kondratieffi
 * Yugus kondratieffi Nelson 2001
 * Yugus kondratieffi Nelson, C.H. 2001
 * Yugus kondratieffi Nelson, C.H., 2001
 * Yugus Ricker
 * Yugus Ricker 1952
 * Yugus Ricker, 1952
 * Yugveella scutellaris iokaste
 * Yugveella scutellaris iokaste Linnavuori 1975
 * Yuhbae Saigusa 1993
 * Yuhina
 * Yuhina ampelina
 * Yuhina ampelina Rippon
 * Yuhina ampelina Rippon 1900
 * Yuhina bakeri
 * Yuhina bakeri Rothschild 1926
 * Yuhina bakeri Rothschild, 1926
 * Yuhina brunneiceps
 * Yuhina brunneiceps Ogilvie-Grant 1906
 * Yuhina brunneiceps Ogilvie-Grant, 1906
 * Yuhina castaneiceps
 * Yuhina castaniceps
 * Yuhina castaniceps (Gould 1871)
 * Yuhina castaniceps (Moore 1854)
 * Yuhina castaniceps (Moore) 1854
 * Yuhina castaniceps (Moore, 1854)
 * Yuhina castaniceps castaniceps
 * Yuhina castaniceps everetti
 * Yuhina castaniceps everetti (Sharpe, 1887)
 * Yuhina castaniceps plumbeiceps
 * Yuhina castaniceps rufigenis
 * Yuhina castaniceps rufigenis?
 * Yuhina castaniceps striata
 * Yuhina castaniceps torqueola
 * Yuhina diademata
 * Yuhina diademata ampelina
 * Yuhina diademata delacouri
 * Yuhina diademata delacouri Yen 1934
 * yui Shiino 1964
 * yuianus Lin, Song &amp; Warren 2005
 * yuii Wang K.N. 1958
 * yuii Yin 1949
 * Yujiangolepis liujingensis
 * Yujiangolepis liujingensis Wang, Pan &amp; Wang 1998
 * Yujiangolepis Wang, Pan &amp; Wang 1998
 * Yujingella
 * Yujingella Feng 2006
 * Yujingella triacantha
 * Yujingella triacantha Feng 2006
 * Yujinia
 * Yujinia angustilimbata
 * Yujinia angustilimbata Zhang &amp; Yuan 1980
 * Yujinia hebeiensis
 * Yujinia hebeiensis Zhang &amp; Wang 1985
 * Yujinia jiaokouensis
 * Yujinia jiaokouensis Zhang &amp; Wang 1985
 * Yujinia latilimbata
 * Yujinia latilimbata Zhang 1995
 * Yujinia lingchuanensis
 * Yujinia lingchuanensis Zhang &amp; Wang 1985
 * Yujinia ludianensis
 * Yujinia ludianensis Meng 1977
 * Yujinia magna
 * Yujinia magna Zhang &amp; Yuan 1980
 * Yujinia qinyuanensis
 * Yujinia qinyuanensis Zhang &amp; Wang 1985
 * Yujinia shanxiensis
 * Yujinia shanxiensis Zhang &amp; Yuan 1980
 * Yujinia Zhang &amp; Yuan 1980
 * Yujinia ZHANG &amp; YUAN in ZHANG et al. 1980
 * Yujinia Zhang &amp; Yuan in Zhang Lin, Wu &amp; Yuan 1980
 * Yukagirites kinasovi
 * Yukagirites kinasovi Repin 1998
 * Yukagirites molodoensis
 * Yukagirites molodoensis Repin 1998
 * Yukagirites Repin 1998
 * Yukagirites Repin in Repin, Meledina &amp; Alexeev 1998
 * Yukagiritidae
 * Yukagiritidae Repin 1998
 * Yukahananomia
 * Yukahananomia Kono 1935
 * Yukahananomia tui
 * Yukahananomia tui Horak 1996
 * Yukara
 * Yukara Kishii 1962
 * Yukatanium
 * Yukatanium sabachana
 * Yukatanium sabachana (Chamberlin 1938)
 * Yukatanium sabachana (Chamberlin, 1938)
 * Yukatanium sabachanum
 * Yukatanium sabachanum (Chamberlin 1938)
 * Yukatanium sabachanum (Chamberlin, 1938)
 * Yukatanium Verhoeff 1938
 * Yukatanium Verhoeff 1941
 * Yukatanium Verhoeff, 1941
 * Yukawamyia
 * Yukawamyia gratia
 * Yukawamyia gratia Mamaev &amp; Zaitzev 1996
 * Yukawamyia gratia Mamaev &amp; Zaitzev, 1996
 * Yukawamyia Mamaev &amp; Zaitzev 1996
 * Yula argyrospila
 * Yula argyrospila (Warren )
 * Yula argyrospila (Warren)
 * Yula argyrospila Warren 1912
 * Yula Bethune Baker
 * Yula Bethune-Baker
 * Yula Bethune-Baker 1906
 * Yula imray
 * Yula imray Hampson 1906
 * Yula moneta
 * Yula moneta (Warren )
 * Yula moneta (Warren)
 * Yula moneta Warren 1912
 * Yula muscosa
 * Yula muscosa (Hampson 1891)
 * Yula muscosa Hampson 1891
 * Yula novaeguineae
 * Yula novaeguineae Bethune-Baker 1906
 * Yula ocellata
 * Yula ocellata Prout 1924
 * Yula submarginata
 * Yula submarginata (Warren )
 * Yula submarginata (Warren)
 * Yula submarginata Warren 1912
 * Yula tenuilinea
 * Yula tenuilinea (Warren )
 * Yula tenuilinea (Warren)
 * Yula tenuilinea Warren 1912
 * Yulania
 * yuma (Carlgren 1900)
 * Yuma browneyes
 * yuma Carlgren 1900
 * Yuma Hulst 1889
 * yuma Nichols 1917
 * Yumaceras
 * Yumaceras falkenbachi
 * Yumaceras falkenbachi Frick 1937
 * Yumaceras figginsi
 * Yumaceras figginsi Frick 1937
 * Yumaceras Frick 1937
 * Yumaceras hamiltoni
 * Yumaceras ruminalis
 * Yumachrysa
 * Yumachrysa apache
 * Yumachrysa apache (Banks 1938)
 * Yumachrysa apache (Banks)
 * Yumachrysa apache (Banks, 1938)
 * Yumachrysa Banks 1950
 * Yumachrysa Banks, 1950
 * Yumachrysa clarivena
 * Yumachrysa clarivena (Banks 1950)
 * Yumachrysa clarivena (Banks, 1950)
 * Yumachrysa incerta
 * Yumachrysa incerta (Banks 1895)
 * Yumachrysa incerta (Banks, 1895)
 * Yumachrysa yuma
 * Yumachrysa yuma (Banks 1950)
 * Yumachrysa yuma (Banks, 1950)
 * Yunacantha Chen &amp; Zia
 * Yunacantha Chen &amp; Zia, 1963
 * Yunacantha nigrolimbata
 * Yunacantha nigrolimbata Chen
 * Yunacantha nigrolimbata Chen &amp; Zia 1963
 * Yunacantha nigrolimbata Chen &amp; Zia, 1963
 * Yunacantha nigrolimbata Zia 1963
 * Yunacantha Zia 1963
 * Yunanoconcha
 * Yunanoconcha Yu &amp; Zhang 1980
 * Yunanopleura
 * Yunanopleura Yu 1987
 * Yunaphientomia
 * Yunaphientomia Li 2002
 * Yunaspes
 * Yunaspes Chen 1976
 * Yunaspes Chen Sicien, Yu Pei-yu, Wang Shu-yung &amp; Jiang Sheng-qiao 1976
 * Yunaspes modogensis
 * Yunaspes modogensis Jiang 1988
 * Yunaspes nigritarsis Chen Sicien, Yu Pei-yu, Wang Shu-yung &amp; Jiang Sheng-qiao 1976
 * yunca (Botosaneanu &amp; Iliffe 2000)
 * Yunchrysopa
 * Yunchrysopa tropica C.-k. Yang &amp; X.-x. Wang 1994
 * Yunchrysopa tropica C.-k. Yang &amp; X.-x. Wang, 1994
 * Yunckeria
 * Yunckeria amplifolia
 * Yunckeria amplifolia (Standl.) Lundell
 * Yunckeria Lundell
 * Yunckeria Lundell 1964
 * Yuodon Chow Chang,Wang &amp; Ting 1973
 * Yuodon Chow, Chang, Wang &amp; Ting 1973
 * Yuodon protoselenoides
 * Yuodon protoselenoides Chow, Chang, Wang &amp; Ting 1973
 * Yuodon protoselenoides Zhou, Zhang, Wang &amp; Ding 1973
 * Yuomyidae
 * Yuomyidae Dawson, Li &amp; Qi 1984
 * Yuomyinae
 * Yuomyinae Dawson, Li &amp; Qi 1984
 * Yuomys
 * Yuomys cavioides
 * Yuomys cavioides Li Chuan-kuei 1975
 * Yuomys elegans
 * Yuomys elegans Wang Jingwen 1978
 * Yuomys huangzhuangensis
 * Yuomys huangzhuangensis Shi Ronglin 1989
 * Yuomys Li 1975
 * Yuomys Li Chuan-kuei 1975
 * Yuomys minggangensis
 * Yuomys minggangensis Wang Banyue &amp; Zhou Shiquan 1982
 * Yuomys weijingensis
 * Yuomys weijingensis Ye Jie 1983
 * Yuomys yunnanensis
 * Yuomys yunnanensis Huang Xueshi &amp; Zhang Jiannong 1990
 * Yuorlovia
 * Yuorlovia Godina 1979
 * Yupanguia Lehtinen 1967
 * Yupanquia
 * Yupanquia Lehtinen 1967
 * Yupanquia schiapelliae
 * Yupanquia schiapelliae Lehtinen 1967
 * Yupanquia schiapelliae Lehtinen, 1967
 * Yupanquia schiapellii
 * Yupanquia schiapellii Lehtinen, 1967
 * Yupingia
 * Yupingia glabra
 * Yupingia glabra Palmer 1968
 * Yupingia Lu 1956
 * Yupingia niobiformis
 * Yupingia niobiformis Lu 1956
 * Yupodisma
 * Yupodisma qingyuan
 * Yupodisma qingyuan Ren, Bingzhong, F. Zhang &amp; Y. Cao 1995
 * Yupodisma qingyuan Ren, Bingzhong, F. Zhang &amp; Y. Cao, 1995
 * Yupodisma qingyuana
 * Yupodisma qingyuana Ren, Zhang &amp; Cao 1995
 * Yupodisma rufipennis
 * Yupodisma rufipennis Zhang &amp; Xia 1990
 * Yupodisma rufipennis Zhang, Xiujiang &amp; Hsia 1990
 * Yupodisma rufipennis Zhang, Xiujiang &amp; Hsia, 1990
 * Yupodisma Zhang &amp; Xia 1990
 * Yuquius travisi Mason 1990
 * Yuraca aureola
 * Yuraca aureola Zanol 1990
 * Yuraca flavomarginata
 * Yuraca flavomarginata Linnavuori &amp; DeLong 1978
 * Yuraca Linnavuori &amp; DeLong 1978
 * Yurakia
 * Yurakia ROZOVA 1963
 * Yurakia yurakiensis
 * Yurakia yurakiensis Roz.
 * Yurakia yurakiensis Rozova 1963
 * Yurammia
 * Yurammia browni
 * Yurammia browni Young 2005
 * Yurammia Young 2005
 * Yuraphidia
 * Yuraphidia Yang 1998
 * Yurebilla
 * Yurebilla gracilis
 * Yurebilla gracilis Southcott 1996
 * Yurebilla Southcott 1996
 * Yurebillidae
 * Yurebillidae Southcott 1996
 * yuri Collette &amp; Parin 1978
 * yuri Kotlyar 1982
 * Yuria
 * Yuria pulcra
 * Yuria pulcra briggsi
 * Yuria pulcra briggsi Suzuki 1975
 * Yuria Suzuki 1964
 * Yusattus
 * Yushania
 * Yushania (K. Schum.) W.C.Lin (1974)
 * Yushania actinoseta
 * Yushania actinoseta W.T. Lin &amp; Z.M. Wu
 * Yushania acuminata
 * Yushania acuminata (Munro) McClure
 * Yushania acuminata (Munro) McClure, 1973
 * Yushania addingtonii
 * Yushania addingtonii Demoly
 * Yushania adpressa
 * Yushania adpressa (T.P.Yi) Demoly
 * Yushania ailuropodina
 * Yushania ailuropodina T.P. Yi
 * Yushania ailuropodina T.P.Yi
 * Yushania alpina
 * Yushania alpina (K. Schum.) W. C. Lin
 * Yushania alpina (K.Schum.) W.C.Lin
 * Yushania ambositrensis
 * Yushania ambositrensis (A. Camus) Ohrnberger
 * Yushania ambositrensis (A.Camus) Ohrnb.
 * Yushania anceps
 * Yushania anceps (Mitford) W. C. Lin
 * Yushania anceps (Mitford) W.C. Lin
 * Yushania anceps (Mitford) W.C.Lin
 * Yushania andropogonoides
 * Yushania andropogonoides (Hand.-Mazz.) T.P. Yi
 * Yushania andropogonoides (Hand.-Mazz.) T.P.Yi
 * Yushania andropogonoides (Handel-Mazzetti) T. P. Yi
 * Yutagraptus Riva 1993
 * Yutagraptus Riva 1994
 * Yutajea
 * Yutajea J. A. Steyermark, 1987
 * Yutajea J.A. Steyermark 1987
 * Yutajea liesneri
 * Yutajea liesneri Steyerm.
 * Yutajea liesneri Steyerm., 1987
 * Yutajea Steyerm.
 * yutimaete Lotufo 1994
 * Yutjuwalia
 * Yutjuwalia nyalma
 * Yutjuwalia nyalma Rentz 2001
 * Yutjuwalia nyalma Rentz, 2001
 * Yutjuwalia nyalma Rentz, D.C.F. 2001
 * Yutjuwalia nyalma Rentz, D.C.F., 2001
 * Yutjuwalia Rentz 2001
 * Yutjuwalia sallyae
 * Yutjuwalia sallyae Rentz 2001
 * Yutjuwalia sallyae Rentz, 2001
 * Yutjuwalia sallyae Rentz, D.C.F. 2001
 * Yutjuwalia sallyae Rentz, D.C.F., 2001
 * yutlinux Sï¿½nchez 2005
 * Yutsengia asiatica
 * yutsil Reid in Fiers, Reid, Iliffe &amp; Suï¿½rez-Morales 1996
 * Yuukianura aphoruroides
 * Yuukianura aphoruroides Yosii 1953
 * Yuukianura cavicola
 * Yuukianura cavicola Yosii 1956
 * Yuukianura halophila
 * Yuukianura halophila Yosii 1955
 * Yuukianura nomurai
 * Yuukianura nomurai Yosii 1962
 * Yuukianura szeptyckii
 * Yuukianura szeptyckii Deharveng &amp; Weiner 1984
 * Yuukianura Yosii 1953
 * Yuukianura Yosii 1955
 * Yuwenia bentleyi
 * Yuwenia bentleyi Runnegar 1981
 * Yuwenia juliana
 * Yuwenia juliana Elicki 1994
 * Yuwenia Runnegar 1981
 * Yuwenia spiralis
 * Yuxianocoleus hebeiense
 * Yuxianocoleus hebeiense Hong 1986
 * Yuxianocoleus Hong 1986
 * Yuyba
 * Yuyba (Barb. Rodr.) L. H. Bailey
 * Yuyba (Barbosa Rodrigues) L. H. Bailey, 1947
 * Yuyba (Barbosa Rodrigues) L.H. Bailey
 * Yuyba (Barbosa Rodrigues) L.H. Bailey 1947
 * Yuyba dakamana
 * Yuyba dakamana L. H. Bailey
 * Yuyba dakamana L. H. Bailey, 1948
 * Yuyba dakamana L.H. Bailey ex Maguire
 * Yuyba dakamana L.H.Bailey
 * Yuyba dakamana L.H.Bailey in Maguire
 * Yuyba essequiboensis
 * Yuyba essequiboensis Glassman
 * Yuyba essequiboensis L. H. Bailey
 * Yuyba essequiboensis L. H. Bailey, 1948
 * Yuyba essequiboensis L.H.Bailey
 * Yuyba essequiboensis L.H.Bailey in Maguire
 * Yuyba gleasonii
 * Yuyba gleasonii L. H. Bailey
 * Yuyba gleasonii L. H. Bailey, 1949
 * Yuyba gleasonii L.H. Bailey
 * Yuyba gleasonii L.H.Bailey
 * Yuyba L.H.Bailey
 * Yuyba maguirei
 * Yuyba maguirei L. H. Bailey
 * Yuyba maguirei L. H. Bailey, 1948
 * Yuyba maguirei L.H. Bailey
 * Yuyba maguirei L.H.Bailey
 * Yuyba maguirei L.H.Bailey in Maguire
 * Yuzhoupliosaurus chengjiangensis
 * Yuzhoupliosaurus chengjiangensis Zhang Yihong 1985
 * Yuzhoupliosaurus Zhang Yihong 1985
 * Yuzurua
 * Yvania Fischer 1885
 * Yvania inclinata
 * Yvania knighti
 * Yvania maestrichtiensts
 * Yvania maestrichtiensts Milovanovic 1936
 * Yvania Milovanovic 1935
 * Yvania Milovanovic [non Fischer 1885] 1935
 * Yvania parva
 * Yvania parva Thomas 1940
 * Yvania pusilla
 * Yvania salinensis
 * Yvania supercrenata
 * Yvaniella
 * Yvaniella alpani
 * Yvaniella alpani Karacabey 1970
 * Yvaniella maestrichtiensis
 * Yvaniella Milovanovic 1938
 * Yvescambefortius Ochi &amp; Kon 1996
 * Yvescambefortius Ochi et Kon, 1996
 * Yvescambefortius sarawacus
 * Yvescambefortius sarawacus (Gillet 1926)
 * Yvescambefortius sarawacus Gillet 1926
 * Yvescambefortius sarawacus Gillet, 1926
 * Yvesella
 * Yvesella Arndt 1928
 * Yvesella tennesseensis
 * Yvesella tennesseensis Arndt, 1928
 * Yvesgalleticeras
 * Yvesgalleticeras Guex, Hungerbuehler, Jenks, Taylor &amp; Bucher 2005
 * Yvesgalleticeras montpellierense
 * Yvesgalleticeras montpellierense (Kummel 1969)
 * Yvesia
 * Yvesia A. Camus
 * Yvesia A. Camus 1927
 * Yvesia A. Camus, 1927
 * Yvesia A.Camus
 * Yvesia acanthosclera
 * Yvesia acanthosclera LÃ©vi &amp; LÃ©vi 1983
 * Yvesia acanthosclera Levi &amp; Levi 1984
 * Yvesia acanthosclera LÃ©vi &amp; LÃ©vi, 1983
 * Yvesia acanthosclera Lï¿½vi &amp; Lï¿½vi 1983
 * Yvesia albula
 * Yvesia albula (Bowerbank 1866)
 * Yvesia albula (Bowerbank, 1866)
 * Yvesia alecto
 * Yvesia alecto T.
 * Yvonaspis Belles-Isles 1989
 * Yvonaspis dawsoni
 * Yvonaspis dawsoni (Lankester 1870)
 * Yvonaspis jexi
 * Yvonaspis jexi (Traquair 1893)
 * Yvonaspis lunata
 * Yvonaspis lunata (Pageau 1969)
 * Yvonaspis peninsula
 * Yvonaspis peninsula (Pageau 1969)
 * Yvonaspis syndenhami
 * Yvonaspis syndenhami (Pageau 1969)
 * Yvonaspis westolli
 * Yvonaspis westolli (Russell 1954)
 * Yvoniellina
 * Yvoniellina feugueuri
 * Yvonniellina
 * Yvonniellina (Conicarcella) choanopsis
 * Yvonniellina (Conicarcella) choanopsis Bielokrys 1995
 * Yvonniellina (Conicarcella) glabra
 * Yvonniellina (Conicarcella) oedelemensis
 * Yvonniellina (Yvonniellina) calathioides
 * Yvonniellina (Yvonniellina) calathioides Bielokrys 1995
 * Yvonniellina biconvexa
 * Yvonniellina biconvexa Bignot 1989
 * Yvonniellina calathioides
 * Yvonniellina campanula
 * Yvonniellina campanula Tappan &amp; Loeblich 1968
 * Yvonniellina choanopsis
 * Yvonniellina concava
 * Yvretta axius
 * Yvretta axius PlÃ¶tz 1883
 * Yvretta axius Plï¿½tz 1883
 * Yvretta carus
 * Yvretta carus (Edwards) 1883
 * Yvretta carus Edwards
 * Yvretta carus Edwards 1883
 * Yvretta citrus
 * Yvretta citrus Mabille 1889
 * Yvretta Hemming 1935
 * Yvretta Hemming, 1935
 * Yvretta reticulata
 * Yvretta reticulata Godman 1900
 * Yvretta rhesus
 * Yvretta rhesus (Edwards) 1878
 * Yvretta rhesus Edwards
 * Yvretta rhesus Edwards 1878
 * Yvretta subreticulata
 * Yvretta subreticulata Plotz
 * Yvretta subreticulata PlÃ¶tz 1883
 * Yvretta subreticulata Plï¿½tz 1883
 * Yvsia hanseni Topsent 1890
 * Yxygodes bekilalis
 * Yxygodes bekilalis Marion 1954
 * Yxygodes insignis
 * Yxygodes insignis Mabille 1900
 * Yxygodes meranalis
 * Yxygodes meranalis Viette 1960
 * Yxygodes olapalis
 * Yxygodes olapalis Viette 1978
 * Yxygodes seyrigalis
 * Yxygodes seyrigalis Marion 1954
 * Yxygodes Viette 1989
 * Yxygodes vieualis
 * Yxygodes vieualis Viette 1960
 * Yxygodes xyridotalis
 * Yxygodes xyridotalis Viette 1960
 * Yxygodes zonalis
 * Yxygodes zonalis Mabille 1900
 * Yyngipicus Stejneger 1906