Taxonomy of the Gastropoda (Bouchet et al., 2017)

The taxonomy of the Gastropoda as it was revised in December 2017 by Philippe Bouchet and eight other authors, is a publication which lays out a newly revised system for the scientific classification of gastropod mollusks. The same work also included the taxonomy of monoplacophorans.

The publication is entitled, "Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families"; it was published by the journal Malacologia.

Summary of the taxonomy
The following cladogram shows a summary of the new gastropod taxonomy, according to the work's Contents section:

†Paleozoic molluscs of uncertain position within Gastropoda or Monoplacophora
(Unassigned to Superfamily) †Superfamily Archinacelloidea Knight, 1952
 * †Family Khairkhaniidae Missarzhevsky, 1989
 * †Family Ladamarekiidae Frýda, 1998
 * †Family Metoptomatidae Wenz, 1938
 * †Family Protoconchoididae Geyer, 1994 (=Patelliconidae Fryda, 1998 )
 * †Family Archinacellidae Knight, 1952
 * †Family Archaeopragidae Horný, 1963

†Order Bellerophontida
†Superfamily Bellerophontoidea McCoy, 1852
 * †Family Bellerophontidae McCoy, 1852
 * †Subfamily Bellerophontinae McCoy, 1852 (=Liljevallospiridae Golikov & Starobogatov, 1989 )
 * †Subfamily Bucanopsinae Wahlman, 1992
 * †Subfamily Cymbulariinae Horný, 1963
 * †Subfamily Bellerophontinae Knight, 1956
 * †Family Bucanellidae Koken, 1925
 * †Family Bucaniidae Ulrich & Scofield, 1897
 * †Subfamily Bucaniinae Knight, 1956 (=Grandostomatinae Horný, 1962 )
 * †Subfamily Plectonotinae Boucot & Yochelson, 1966
 * †Tribe Plectonotini Boucot & Yochelson, 1966
 * †Tribe Boucotonotini Frýda, 1999
 * †Subfamily Salpingostomatinae Koken, 1925
 * †Subfamily Undulabucaniinae Wahlman, 1992
 * †Family Euphemitidae Knight, 1956
 * †Subfamily Euphemitinae Knight, 1956
 * †Subfamily Paleuphemitinae Frýda, 1999
 * †Family Pterothecidae P. Fischer, 1883
 * †Subfamily Pterothecinae P. Fischer, 1883
 * †Subfamily Carinaropsinae Ulrich & Scofield, 1897
 * †Subfamily Pedasiolinae Wahlman, 1992
 * †Family Sinuitidae Dall, 1913
 * †Subfamily Sinuitinae Dall, 1913 (=Protowarthiidae Ulrich & Scofield, 1897 )
 * †Subfamily Aiptospirinae Wang, 1980
 * †Subfamily Hispanosinuitinae Frýda & Gutierrez-Marco, 1996
 * †Family Tremanotidae Naef, 1911
 * †Family Tropidodiscidae Knight, 1956 (=Temnodiscinae Horný, 1963 )

†Order Pelagiellida
†Superfamily Pelagielloidea Knight, 1956 (=Orthostrophina)
 * †Family Pelagiellidae Knight, 1956 (=Proeccyliopteridae Kobayashi, 1962 ; =Protoscaevogyridae Kobayashi, 1962 )
 * †Family Aldanellidae Linsley & Kier, 1984

†Order Helcionellida
†Superfamily Scenelloidea S. A. Miller, 1889 †Superfamily Yochelcionelloidea Runnegar & Jell, 1976
 * †Family Scenellidae S. A. Miller, 1889
 * †Subfamily Scenellinae S. A. Miller, 1889 (=Palaeacmaeidae Grabau & Shimer, 1909 ; =Hampilininae Kobayashi, 1958 ; =Eosoconidae Yu, 1979 ; =Merismoconchidae Yu, 1979 ; =Shelbyoceratidae Stinchcomb, 1986 ; =Actinoconidae Starobogatov & Moskalev, 1987 ; =Yangtzemerismatinae Yu, 1987 ; =Marocellidae Topper, Brock, Skovsted & Paterson, 2009 )
 * †Subfamily Yangtzeconinae Yu, 1979 (=Ceratoconidae Missarzhevsky, 1989 )
 * †Family Coreospiridae Knight, 1947 (=Archaeospiridae Yu, 1979 ; =Yangtzespirinae Yu, 1984 ; =Latouchellidae Golikov & Starobogatov, 1989 )
 * †Family Carinopeltidae Parkhaev, 2013 (=Igarkiellidae Parkhaev, 2001 )
 * †Family Yochelcionellidae Runnegar & Jell, 1976 (=Enigmaconidae MacKinnon, 1985 )
 * †Family Stenothecidae Runnegar & Jell, 1980
 * †Subfamily Stenothecinae Runnegar & Jell, 1980 (=Mellopegmidae Parkhaev, 2001 )
 * †Subfamily Watsonellinae Parkhaev, 2001
 * †Family Securiconidae Missarzhevsky, 1989 (=Rugaeconidae Vassiljeva, 1990 ; =Trenellidae Parkhaev, 2001 )

†Paleozoic basal taxa that are certainly Gastropoda
(Unassigned to Superfamily) †Superfamily Clisospiroidea S. A. Miller, 1889 (=Mimospirina) †Superfamily Euomphaloidea White, 1877 †Superfamily Loxonematoidea Koken, 1889 †Superfamily Macluritoidea Carpenter, 1861 †Superfamily Ophiletoidea Koken, 1907 †Superfamily Oriostomatoidea Koken, 1896 †Superfamily Palaeotrochoidea† Knight, 1956 †Superfamily Trochonematoidea Zittel, 1895
 * †Family Codonocheilidae S. A. Miller, 1889
 * †Family Craspedostomatidae Wenz, 1938
 * †Subfamily Craspedostomatinae Wenz, 1938
 * †Subfamily Bucanospirinae Wenz, 1938
 * †Family Crassimarginatidae Frýda, Blodgett & Lenz, 2002
 * †Family Discohelicidae Schröder, 1995
 * †Family Isospiridae Wangberg-Eriksson, 1964
 * †Family Yuopisthonematidae Nützel, 2017 (=Opisthonematidae Yu, 1976 )
 * †Family Paraturbinidae Cossmann, 1916
 * †Family Pragoserpulinidae Frýda, 1998
 * †Family Raphistomatidae Koken, 1896 (=Ceratopeidae Yochelson & Bridge, 1957 )
 * †Family Rhytidopilidae Starobogatov, 1976
 * †Family Scoliostomatidae Frýda, Blodgett & Lenz, 2002
 * †Subfamily Scoliostomatinae Frýda, Blodgett & Lenz, 2002
 * †Subfamily Mitchelliinae Frýda, Blodgett & Lenz, 2002
 * †Family Sinuopeidae Wenz, 1938
 * †Subfamily Sinuopeinae Wenz, 1938
 * †Subfamily Platyschismatinae Knight, 1956
 * †Subfamily Turbonellininae Knight, 1956
 * †Family Clisospiridae S. A. Miller, 1889
 * †Subfamily Clisospirinae S. A. Miller, 1889
 * †Subfamily Atracurinae Horný, 1964
 * †Subfamily Progalerinae Knight, 1956
 * †Subfamily Trochoclisinae Horný, 1964
 * †Family Onychochilidae Koken, 1925
 * †Subfamily Onychochilinae Koken, 1925
 * †Subfamily Hyperstropheminae Horný, 1964
 * †Subfamily Scaevogyrinae Wenz, 1938
 * †Family Euomphalidae White, 1877
 * †Subfamily Euomphalinae White, 1877 (=Schizostomatidae Bronn, 1849 ; =Polytropidae Ulrich, 1897 ; =Straparolinae Cossmann, 1916 ; =Poleumitidae Wenz, 1938 )
 * †Subfamily Odontomariinae Frýda, Heidelberger & Blodgett, 2006
 * †Family Euomphalopteridae Koken, 1896
 * †Subfamily Euomphalopterinae Koken, 1896
 * †Subfamily Spinicharybdiinae Rohr, Blodgett & Frýda, 2008
 * †Family Helicotomidae Wenz, 1938
 * †Family Lesueurillidae P. J. Wagner, 2002
 * †Family Omphalocirridae Wenz, 1938
 * †Family Omphalotrochidae Knight, 1945
 * †Family Straparollinidae P. J. Wagner, 2002
 * †Family Loxonematidae Koken, 1889 (=Holopellidae Koken, 1896 ; =Omospirinae Wenz, 1938 )
 * †Family Palaeozygopleuridae Horný, 1955
 * †Family Macluritidae Carpenter, 1861
 * †Family Ophiletidae Koken, 1907 (=Ecculiomphalinae Wenz, 1938 )
 * †Family Oriostomatidae Koken, 1896
 * †Family Tubinidae Knight, 1956
 * †Family Palaeotrochidae Knight, 1956
 * †Family Trochonematidae Zittel, 1895
 * †Family Lophospiridae Wenz, 1938 (=Gyronematinae Knight, 1956 ; =Ruedemaniinae Knight, 1956 )

Order Patellida
Superfamily Eoacmaeoidea Nakano & Ozawa, 2007 Superfamily Patelloidea Rafinesque, 1815 Superfamily Lottioidea Gray, 1840
 * Family Eoacmaeidae Nakano & Ozawa, 2007
 * Family Patellidae Rafinesque, 1815
 * Family Lottiidae Gray, 1840
 * Subfamily Lottiinae Gray, 1840
 * Tribe Lottiini Gray, 1840
 * Tribe Patelloidini Chapman & Gabriel, 1923
 * Subfamily Tecturinae Gray, 1847
 * Family Acmaeidae Forbes, 1850 (=Rhodopetalinae Lindberg, 1981 ; =Erginini Lindberg, 1990 )
 * †Family Damilinidae Horný, 1961
 * Family Lepetidae Gray, 1850
 * Subfamily Lepetinae Gray, 1850
 * Subfamily Propilidiinae Thiele, 1891
 * †Family Lepetopsidae McLean, 1990
 * Family Nacellidae Thiele, 1891 (=Bertiniidae Jousseaume, 1883 )
 * Family Neolepetopsidae McLean, 1990
 * Family Pectinodontidae Pilsbry, 1891

Order Neomphalida
Superfamily Neomphaloidea McLean, 1981
 * Family Neomphalidae McLean, 1981 (=Cyathermiidae McLean, 1990 )
 * Family Melanodrymiidae Salvini-Plawen & Steiner, 1995
 * Family Peltospiridae McLean, 1989

Order Cocculinida
Superfamily Cocculinoidea Dall, 1882
 * Family Cocculinidae Dall, 1882
 * Family Bathysciadiidae Dautzenberg & H. Fischer, 1900 (=Bathypeltidae Moskalev, 1971 )

†Paleozoic taxa of uncertain position

 * †Family Holopeidae Cossmann, 1908
 * †Family Micromphalidae J. A. Harper, 2016

Order Pleurotomariida
†Superfamily Eotomarioidea Wenz, 1938 †Superfamily Murchisonioidea Koken, 1896 Superfamily Pleurotomarioidea Swainson, 1840 †Superfamily Porcellioidea Koken, 1895 †Superfamily Pseudophoroidea S. A. Miller, 1889 †Superfamily Ptychomphaloidea Wenz, 1938 †Superfamily Schizogonioidea Cox, 1960 †Superfamily Sinuspiroidea Mazaev, 2011
 * †Family Eotomariidae Wenz, 1938
 * †Subfamily Eotomariinae Wenz, 1938 (=Liospirinae Knight, 1956 )
 * †Tribe Eotomariini Wenz, 1938
 * †Tribe Deseretospirini Gordon & Yochelson, 1987
 * †Tribe Glabrocingulini Gordon & Yochelson, 1987
 * †Subfamily Neilsoniinae Knight, 1956
 * †Tribe Neilsoniini Knight, 1956
 * †Tribe Spirovallini Waterhouse, 2001
 * †Family Gosseletinidae Wenz, 1938
 * †Subfamily Gosseletininae Wenz, 1938
 * †Subfamily Coelozoninae Knight, 1956
 * †Tribe Coelozonini Knight, 1956 (=Euryzoninae P. J. Wagner, 2002 )
 * †Tribe Planozonini Knight, 1956
 * †Subfamily Triangulariinae Vostokova, 1960
 * †Family Luciellidae Knight, 1956
 * †Family Phanerotrematidae Knight, 1956
 * †Family Pseudoschizogoniidae Bandel, 2009
 * †Family Wortheniellidae Bandel, 2009
 * †Family Murchisoniidae Koken, 1896
 * †Subfamily Murchisoniinae Koken, 1896 (=Hormotomidae Wenz, 1938 )
 * †Subfamily Cheeneetnukiinae Blodgett & Cook, 2002
 * †Family Farewelliidae Mazaev, 2011
 * †Family Plethospiridae Wenz, 1938 (=Pithodeinae Wenz, 1938 )
 * †Family Ptychocaulidae Mazaev, 2011
 * Family Pleurotomariidae Swainson, 1840
 * †Family Catantostomatidae Wenz, 1938
 * †Family Lancedelliidae Bandel, 2009
 * †Family Phymatopleuridae Batten, 1956
 * †Family Polytremariidae Wenz, 1938
 * †Family Portlockiellidae Batten, 1956
 * †Family Rhaphischismatidae Knight, 1956
 * †Family Stuorellidae Bandel, 2009
 * †Family Trochotomidae Cox, 1960 (1934) (=Ditremariinae Haber, 1934 )
 * †Family Zygitidae Cox, 1960
 * †Family Porcelliidae Koken, 1895
 * †Subfamily Porcelliinae Koken, 1895
 * †Subfamily Agnesiinae Knight, 1956
 * †Tribe Agnesiini Knight, 1956
 * †Tribe Anoriostomatini Frýda & Farrell, 2005
 * †Family Cirridae Cossmann, 1916
 * †Subfamily Cirrinae Cossmann, 1916
 * †Subfamily Platyacrinae Wenz, 1938 (=Hesperocirrinae O. Haas, 1953 )
 * †Subfamily Cassianocirrinae Bandel, 1993
 * †Family Pavlodiscidae Frýda, 1998
 * †Family Planitrochidae Knight, 1956
 * †Family Pseudophoridae S. A. Miller, 1889 (=Palaeonustidae Wenz, 1938 )
 * †Family Ptychomphalidae Wenz, 1938 (=Ptychomphalinini Wenz, 1938 ; =Mourloniini Yochelson & Dutro, 1960 )
 * †Family Rhaphistomellidae Bandel, 2009
 * †Family Schizogoniidae Cox, 1960
 * †Family Pseudowortheniellidae Bandel, 2009
 * †Family Sinuspiridae Mazaev, 2011

Order Seguenziida
Superfamily Seguenzioidea Verrill, 1884
 * Family Seguenziidae Verrill, 1884
 * Subfamily Seguenziinae Verrill, 1884
 * Tribe Seguenziini Verrill, 1884
 * Tribe Fluxinellini B. A.Marshall, 1991 (=Ancistrobasidae Bandel, 2010 )
 * Subfamily Asthelysinae B. A.Marshall, 1991
 * Subfamily Davisianinae Egorova, 1972 (=Putillinae F. Nordsieck, 1972 ; =Oligomeriinae Egorov, 2000 )
 * Subfamily Guttulinae Goryachev, 1987
 * Family Cataegidae McLean & Quinn, 1987
 * Family Chilodontaidae Wenz, 1938
 * Family Choristellidae Bouchet & Warén, 1979
 * Family Eucyclidae Koken, 1896 (=Amberleyidae Wenz, 1938 ; =Calliotropini Hickman & McLean, 1990 ; =Turcicidae Bandel, 2010 )
 * †Family Eucycloscalidae Gründel, 2007
 * Family Eudaroniidae Gründel, 2007
 * †Family Eunemopsidae Bandel, 2010
 * †Family Lanascalidae Bandel, 1992
 * †Family Laubellidae Cox, 1960
 * Family Pendromidae Warén, 1991
 * †Family Pseudoturcicidae Bandel, 2010
 * †Family Sabrinellidae Bandel, 2010
 * Family Trochaclididae Thiele, 1928 (=Acremodontinae B. A. Marshall, 1983 )

Order Lepetellida
Superfamily Lepetelloidea Dall, 1882 Superfamily Fissurelloidea Fleming, 1822 Superfamily Haliotoidea Rafinesque, 1815 Superfamily Lepetodriloidea McLean, 1988 Superfamily Scissurelloidea Gray, 1847
 * Family Lepetellidae Dall, 1882
 * Family Addisoniidae Dall, 1882
 * Subfamily Addisoniinae Dall, 1882
 * Subfamily Helicopeltinae B. A. Marshall, 1996
 * Family Bathyphytophilidae B. A. Marshall, 1986
 * Family Caymanabyssiidae Moskalev, 1978
 * Family Cocculinellidae Moskalev, 1971
 * Family Osteopeltidae B. A. Marshall, 1987
 * Family Pseudococculinidae Hickman, 1983
 * Family Pyropeltidae McLean & Haszprunar, 1987
 * Family Fissurellidae Fleming, 1822
 * Subfamily Fissurellinae Fleming, 1822
 * Subfamily Diodorinae Odhner, 1932
 * Subfamily Emarginulinae Children, 1834 (=Rimulidae Anton, 1838 ; =Fissurellideini Pilsbry, 1890 ; =Zeidoridae Naef, 1911 ; =Scutini Christiaens, 1973 ; =Clypidinidae Golikov & Starobogatov, 1989
 * Subfamily Hemitominae Kuroda, Habe & Oyama, 1971
 * Family Haliotidae Rafinesque, 1815 (=Deridobranchinae Gray, 1847
 * †Family Temnotropidae Cox, 1960
 * Family Lepetodrilidae McLean, 1988 (=Gorgoleptidae McLean, 1988 ; =Clypeosectidae McLean, 1989 )
 * Family Sutilizonidae McLean, 1989 (=Temnocinclinae McLean, 1989 )
 * Family Scissurellidae Gray, 1847 (=Depressizoninae Geiger, 2003 )
 * Family Anatomidae McLean, 1989 (=Schizotrochidae Iredale & McMichael, 1962 )
 * Family Larocheidae Finlay, 1927

Order Trochida
Superfamily Trochoidea Rafinesque, 1815
 * Family Trochidae Rafinesque, 1815
 * Subfamily Trochinae Rafinesque, 1815 (=Pyramidinae Gray, 1847 )
 * Subfamily Alcyninae Williams, Donald, Spencer & Nakano, 2010
 * Subfamily Cantharidinae Gray, 1857 (=Pagodatrochidae Bandel, 2010 )
 * Subfamily Chrysostomatinae Williams, Donald, Spencer & Nakano, 2010
 * Subfamily Fossarininae Bandel, 2009
 * Subfamily Halistylinae Keen, 1958
 * Subfamily Kaiparathininae B. A. Marshall, 1993
 * Subfamily Monodontinae Gray, 1857
 * Subfamily Stomatellinae Gray, 1840 (=Stomatiidae Carpenter, 1861 )
 * Subfamily Umboniinae H. Adams & A. Adams, 1854 (1840) (=Rotellinae Swainson, 1840 ; =Talopiidae Finlay, 1928 ; =Bankiviini Hickman & McLean, 1990 ; =Lirulariinae Hickman & McLean, 1990 ; =Monileini Hickman & McLean, 1990 ; =Isandini Hickman, 2003 )
 * Family Angariidae Gray, 1857 (=Delphinulinae Stoliczka, 1868 )
 * †Family Anomphalidae Wenz, 1938
 * †Family Araeonematidae Nützel, 2012
 * Family Areneidae McLean, 2012
 * Family Calliostomatidae Thiele, 1924 (1847)
 * Subfamily Calliostomatinae Thiele, 1924 (1847) (=Ziziphininae Gray, 1847 )
 * †Subfamily Callotrochinae Szabó, 2011
 * Subfamily Fautricinae B. A. Marshall, 1995
 * Subfamily Margarellinae Williams, 2013
 * Subfamily Thysanodontinae B. A. Marshall, 1988
 * Subfamily Xeniostomatinae McLean, 2012
 * Family Colloniidae Cossmann, 1917
 * Subfamily Colloniinae Cossmann, 1917 (=Bothropomatinae Thiele, 1924 ; =Homalopomatinae Keen, 1960 )
 * †Subfamily Crossostomatinae Cox, 1960
 * †Tribe Tadeorbisinini Monari, Conti & Szabó, 1995
 * †Tribe Costataphrini Gründel, 2008
 * †Tribe Crossostomatini Cox, 1960
 * †Tribe Helicocryptini Cox, 1960
 * †Subfamily Lewisiellinae Gründel, 2008
 * Subfamily Liotipomatinae McLean, 2012
 * Subfamily Moelleriinae Hickman & McLean, 1990
 * †Subfamily Petropomatinae Cox, 1960
 * Family Conradiidae Golikov & Starobogatov, 1987 (=Crosseolidae Hickman, 2013 )
 * †Family Nododelphinulidae Cox, 1960
 * †Family Elasmonematidae Knight, 1956
 * †Family Epulotrochidae Gründel, Keupp & Lang, 2017
 * †Family Eucochlidae Bandel, 2002
 * Family Liotiidae Gray, 1850
 * Subfamily Liotiinae Gray, 1850 (=Cyclostrematidae P. Fischer, 1885 )
 * †Subfamily Brochidiinae Yochelson, 1956
 * †Subfamily Dichostasiinae Yochelson, 1956
 * Family Margaritidae Thiele, 1924 (=Margaritinae Stoliczka, 1868 ; =Gazidae Hickman & McLean, 1990 )
 * †Family Metriomphalidae Gründel, Keupp & Lang, 2017
 * †Family Microdomatidae Wenz, 1938
 * †Subfamily Microdomatinae Wenz, 1938
 * †Subfamily Decorospirinae Blodgett & Frýda, 1999
 * Family Phasianellidae Swainson, 1840
 * Subfamily Phasianellinae Swainson, 1840 (=Eutropiinae Gray, 1847 )
 * Subfamily Gabrieloninae Hickman & McLean, 1990
 * Subfamily Tricoliinae Woodring, 1928
 * †Family Proconulidae Cox, 1960 (=Parataphrinae Calzada, 1989 )
 * †Family Sclarotrardidae Gründel, Keupp & Lang, 2017
 * Family Skeneidae W. Clark, 1851 (=Delphinoideinae Thiele, 1924 )
 * Family Solariellidae Powell, 1951 (=Minoliinae Kuroda, Habe & Oyama, 1971 )
 * Family Tegulidae Kuroda, Habe & Oyama, 1971
 * Family Turbinidae Rafinesque, 1815
 * Subfamily Turbininae Rafinesque, 1815 (=Senectinae Swainson, 1840 ; =Imperatorinae Gray, 1847 ; =Astraliinae H. Adams & A. Adams, 1854 ; =Astraeinae Davies, 1935 ; =Bolmidae Delpey, 1941 )
 * †Subfamily Moreanellinae J. C. Fischer & Weber, 1997
 * Subfamily Prisogastrinae Hickman & McLean, 1990
 * †Family Tychobraheidae Horný, 1992
 * †Family Velainellidae Vasseur, 1880

†Paleozoic taxa of uncertain position
†Superfamily Nerrhenoidea Bandel & Heidelberger, 2001 †Superfamily Platyceratoidea Hall, 1879
 * †Family Nerrhenidae Bandel & Heidelberger, 2001
 * †Family Platyceratidae Hall, 1879 (=Cyclonematidae P. Fischer, 1885 ; =Platyostomatidae S. A. Miller, 1889 ; =Strophostylidae Grabau & Shimer, 1909 ; =Palaeocapulidae Grabau, 1936 )

†Order Cyrtoneritida

 * †Family Orthonychiidae Bandel & Frýda, 1999
 * †Family Vltaviellidae Bandel & Frýda, 1999
 * †Subfamily Vltaviellinae Bandel & Frýda, 1999
 * †Subfamily Krameriellinae Frýda & Heidelberger, 2003

Order Cycloneritida
Superfamily Helicinoidea Superfamily Hydrocenoidea †Superfamily Naticopsoidea Superfamily Neritoidea Superfamily Neritopsoidea †Superfamily Symmetrocapuloidea
 * Family Helicinidae
 * Subfamily Helicininae (=Olygyridae; =Bourcierinae)
 * Subfamily Ceratodiscinae
 * †Subfamily Dimorphoptychiinae
 * Subfamily Hendersoniinae
 * Subfamily Stoastomatinae
 * Subfamily Vianinae
 * †Family Dawsonellidae
 * †Family Deianiridae
 * Family Neritiliidae
 * Family Proserpinellidae (=Ceresinae)
 * Family Proserpinidae (=Despoenidae)
 * Family Hydrocenidae (=Georissinae)
 * †Family Naticopsidae
 * †Subfamily Naticopsinae
 * †Subfamily Ampezzonaticopsinae
 * †Subfamily Hologyrinae
 * †Family Scalaneritinidae
 * †Family Trachyspiridae
 * †Family Tricolnaticopsidae
 * Family Neritidae
 * Subfamily Neritinae (=Neritellinae; =Protoneritidae)
 * Subfamily Neritininae (=Orthopomatini; =Stenopomatini; =Septariini; =Theodoxinae)
 * Subfamily Smaragdiinae
 * †Subfamily Velatinae
 * †Family Cortinellidae
 * †Family Neridomidae
 * †Family Neritariidae
 * †Subfamily Neritariinae
 * †Subfamily Oncochilinae
 * †Subfamily Trachyneritariinae
 * †Family Otostomidae
 * †Family Parvulatopsidae
 * Family Phenacolepadidae
 * Subfamily Phenacolepadinae
 * Subfamily Shinkailepadinae
 * †Family Pileolidae
 * Family Neritopsidae
 * Subfamily Neritopsinae (=Titiscaniidae)
 * †Subfamily Cassianopsinae
 * †Subfamily Colubrellopsinae
 * †Subfamily Paffrathiinae
 * †Family Delphinulopsidae
 * †Subfamily Delphinulopsinae
 * †Subfamily Platychilininae
 * †Family Fedaiellidae
 * †Family Palaeonaricidae
 * †Family Plagiothyridae
 * †Family Pseudorthonychiidae
 * †Family Symmetrocapulidae

†Fossil taxa of uncertain position
Unassigned to Superfamily †Superfamily Dendropupoidea †Superfamily Peruneloidea †Superfamily Subulitoidea
 * †Family Acanthonematidae
 * †Family Ampezzanildidae
 * †Family Coelostylinidae
 * †Family Kittlidiscidae
 * †Family Plicatusidae
 * †Family Pragoscutulidae
 * †Family Pseudomelaniidae (=Trajanellidae)
 * †Family Spanionematidae
 * †Family Spirostylidae
 * †Family Dendropupidae
 * †Family Anthracopupidae
 * †Family Perunelidae
 * †Family Chuchlinidae
 * †Family Imoglobidae
 * †Family Sphaerodomidae
 * †Family Subulitidae (=Macrocheilidae; =Bulimorphidae; =Fusispiridae)
 * †Family Ischnoptygmatidae

Grade Architaenioglossa
Superfamily Ampullarioidea Superfamily Cyclophoroidea Superfamily Viviparoidea
 * Family Ampullariidae
 * Family Cyclophoridae
 * Family Aciculidae (=Acmeidae)
 * Family Craspedopomatidae
 * Family Diplommatinidae
 * †Family Ferussinidae
 * Family Maizaniidae
 * Family Megalomastomatidae
 * Family Neocyclotidae
 * Family Pupinidae
 * Family Viviparidae
 * Family Pliopholygidae

Cohort Sorbeoconcha
Unassigned to Superfamily †Superfamily Acteoninoidea †Superfamily Orthonematoidea †Superfamily Palaeostyloidea †Superfamily Pseudozygopleuroidea †Superfamily Soleniscoidea
 * †Family Brachytrematidae
 * †Family Globocornidae
 * †Family Prostyliferidae
 * †Family Acteoninidae
 * †Family Orthonematidae
 * †Family Goniasmatidae
 * †Family Palaeostylidae
 * †Family Pseudozygopleuridae (=Cyclozygidae; Eoptychiidae; Stephanozygidae)
 * †Family Goniospiridae (=Polygyrinidae)
 * †Family Pommerozygiidae
 * †Family Protorculidae
 * †Family Zygopleuridae
 * †Family Soleniscidae
 * †Family Anozygidae
 * †Family Meekospiridae

Subcohort Campanilimorpha
Superfamily Campaniloidea
 * Family Campanilidae
 * Family Ampullinidae
 * †Family Diozoptyxidae
 * †Family Gyrodidae
 * †Family Metacerithiidae

Subcohort Cerithiimorpha
Taxa of uncertain position

Order Nudibranchia
Suborder Doridina Suborder Cladobranchia
 * Infraorder Bathydoridoidei
 * Infraorder Doridoidei

Order Pteropoda
Suborder Euthecosomata Suborder Pseudothecosomata Suborder Gymnosomata