List of the Paleozoic life of Alaska

This list of the Paleozoic life of Alaska contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Alaska and are between 538.8 and 252.17 million years of age.

A

 * †Abadehella
 * †Acanthocladia
 * †Acanthopecten
 * †Acanthopecten carbonifer – or unidentified related form
 * †Acanthopecten delawarensis – or unidentified related form
 * †Acanthophyllum
 * Acanthopyge fossil cropped.png †[[Acanthopyge]]
 * †Acervularia
 * †Aclisina – tentative report
 * †Acmarhachis
 * †Acmarhachis acutus
 * †Acrosaccus
 * †Acrosaccus shuleri – or unidentified comparable form
 * †Acrothele
 * †Actinocystis – tentative report
 * †Actinocystis perfecta – or unidentified comparable form
 * †Actinostroma
 * †Adolfispirifer
 * †Adolfispirifer sanjuanensis
 * †Afilasma
 * †Agathammina
 * †Agetolites
 * †Aglaoglypta
 * Gasteropods - Ammonites - Agoniatites obliquus.JPG †[[Agoniatites]] – tentative report
 * †Akidograptus
 * †Akidograptus acuminatus
 * †Alaskacirrus – type locality for genus
 * †Alaskacirrus bandeli – type locality for species
 * †Alaskaspongia
 * †Alaskaspongia nana
 * †Alaskaspongiella – type locality for genus
 * †Alaskaspongiella laminosa – type locality for species
 * †Alaskiella – type locality for genus
 * †Alaskiella medfraensis – type locality for species
 * †Alaskodiscus
 * †Alaskodiscus donensis
 * †Alaskospira
 * †Alaskospira dunbari
 * †Alaskozygopleura
 * †Alaskozygopleura crassicostata
 * †Albaillella
 * †Albaillella cartalla – or unidentified related form
 * †Aldanispirifer
 * †Allonema
 * †Allonema silurica
 * †Allorhynchoides – type locality for genus
 * †Allorhynchoides kirki – type locality for species
 * †Alokistocare – or unidentified comparable form
 * †Alokistocare lobatum
 * †Alveolitella
 * †Alveolites
 * †Amblysiphonella
 * †Ambocoelia
 * †Ambocoelia planiconvexa – or unidentified related form
 * †Ambocoelia umbonata
 * †Amoenospirifer
 * †Amoenospirifer angustiplicata
 * †Amoenospirifer sulcalplicata
 * †Amphipora
 * †Amplexograptus
 * †Amplexograptus confertus – or unidentified comparable form
 * †Amplexograptus perexcavatus – or unidentified comparable form
 * †Amplexoides
 * †Amplexus
 * †Anatrypa
 * †Anatrypa alinensis – or unidentified related form
 * †Anatrypa khavae – or unidentified comparable form
 * †Ancillotoechia
 * †Ancillotoechia antiquaria
 * †Ancyrognathus
 * †Ancyrognathus amana – or unidentified comparable form
 * †Anematina
 * †Anematina rockymontanum
 * †Anemonaria
 * †Anemonaria pseudohorrida
 * †Angullongia
 * †Angullongia minuta
 * †Anidanthus
 * †Anisopleurella
 * †Anisopleurella tricostata – type locality for species
 * †Anisotrypa – tentative report
 * †Anomalograptus
 * †Anomphalus – tentative report
 * †Anopolenus
 * †Anopolenus henrici
 * †Anoptambonites
 * †Anoptambonites grayae
 * †Anoptambonites pulchra
 * †Antherosalpinx
 * †Anthraconeilo – tentative report
 * †Aparchitella – tentative report
 * †Aphelognathus
 * †Aphelognathus divergens – or unidentified related form
 * †Apheoorthis
 * †Aphrosalpinx
 * †Aphrosalpinx nana – type locality for species
 * †Aphrosalpinx textilis
 * †Aphyllum
 * †Archaediscus
 * †Archeocidaris – tentative report
 * †Arctitreta
 * †Arctitreta kempei – or unidentified comparable form
 * †Arctozone – type locality for genus
 * †Arctozone cooki – type locality for species
 * †Arjamannia
 * †Arjamannia thraivensis – or unidentified related form
 * †Aseptirhynchia
 * †Aseptirhynchia glabrata
 * †Asgardaspira
 * †Asgardaspira gerulus – type locality for species
 * †Astralites
 * †Astralites gamblei – type locality for species
 * †Athabaskiella
 * †Athabaskiella ardis – type locality for species
 * †Athyris
 * †Athyris lamellosa – or unidentified related form
 * †Atomodesma – tentative report
 * Atrypa reticularis pedunculate Gondelsheim CRF.jpg †[[Atrypa]]
 * †Atrypa hystrix
 * †Atrypa reticularis
 * †Atrypella
 * †Atrypella borealis
 * †Atrypella scheii
 * †Atrypella tenuis
 * †Atrypoidea
 * †Atrypoidea scheii
 * †Attenuatella
 * †Aulocystis
 * †Aulopora
 * †Australonema
 * †Australophyllum
 * Aviculopecten subcardiformis01.JPG †[[Aviculopecten]]
 * †Aviculopecten chesterensis – tentative report
 * †Aviculopecten delawarensis – or unidentified related form
 * †Aviculopecten edwardsi – or unidentified related form
 * †Aviculopecten fasciculatus – or unidentified related form
 * †Aviculopecten hardinensis – or unidentified related form
 * †Aviculopecten mccoyi – or unidentified related form
 * †Aviculopecten montpelierensis – or unidentified related form
 * †Aviculopecten occidentalis – or unidentified related form
 * †Aviculopecten similis – or unidentified related form
 * † Avonia – tentative report

B

 * †Bailiaspis
 * †Bailiaspis picta
 * Bairdia
 * †Balbinipleura
 * †Balbinipleura krawczynskii – type locality for species
 * †Barocospira
 * †Barocospira cindiprellerae – type locality for species
 * †Bathyuriscidella
 * †Bathyuriscidella socialis
 * †Bathyuriscus
 * †Bathyuriscus punctatus – type locality for species
 * †Batostomella
 * †Belemnites – tentative report
 * Bellerophon umbilicalis.jpg †[[Bellerophon (genus)|Bellerophon]]
 * †Bellerophon chapmani
 * †Bellerophon livengoodensis
 * †Bellerophon spergensis – or unidentified related form
 * †Belodina
 * †Belowea
 * †Belowea variabilis
 * †Bembexia – tentative report
 * †Bembexia inumbilicata – type locality for species
 * †Bensbergia
 * †Bensbergia subcostata – or unidentified related form
 * †Beraunia
 * †Beraunia bifrons
 * †Beraunia bohemica
 * †Betaneospirifer
 * †Betaneospirifer marcoui – or unidentified related form
 * †Beyrichia
 * †Beyrichia churkini
 * †Bicarinatina
 * †Bicarinatina kongakutensis – type locality for species
 * †Bighornia
 * †Bimuria
 * †Bimuria gilbertella
 * †Blasispirifer
 * †Blasispirifer blasii – or unidentified related form
 * †Bohemicardia
 * †Bohemicardia bohemica – or unidentified comparable form
 * †Bolaspidella
 * †Bolaspidella wellsvillensis
 * †Bothrodendron
 * †Bothrodendron kiltorkense
 * †Boucotspira
 * †Boucotspira carinifer
 * †Brachylasma – tentative report
 * †Brachymetopus
 * †Brachymetopus pseudometopina
 * †Brachyprion
 * †Brachythyrina
 * †Brachythyrina rectangula – or unidentified related form
 * †Brachythyris
 * †Brachythyris subcardiformis – or unidentified related form
 * †Brachythyris subcardiiformis – or unidentified related form
 * †Brachythyris suborbicularis – or unidentified related form
 * †Brachythyris ufensis – or unidentified related form
 * †Breviphyllum
 * †Breviphyllum lindstromi – or unidentified comparable form
 * †Briscoia – tentative report
 * †Bronteus
 * †Brooksina
 * †Brooksina alaskensis
 * †Bruntonia
 * †Bruntonia granulifera
 * †Bucanopsis
 * †Bucanopsis volgulica – or unidentified related form
 * †Buechelia
 * †Buechelia nodosa
 * †Bulimorpha
 * †Bulimorphia
 * †Bulimorphia peracuta – or unidentified related form
 * †Buthrotrephis – tentative report

C

 * †Calapoecia
 * †Calceola
 * †Calceola sandalina – or unidentified comparable form
 * †Callaiapsida
 * †Callaiapsida arctica
 * †Callaiapsida kekuensis – type locality for species
 * †Callaiapsida pentameroides – or unidentified related form
 * †Calliprotonia – tentative report
 * †Callistadia
 * †Callograptus
 * †Callositella – type locality for genus
 * †Callositella cheeneetnukensis – type locality for species
 * †Callospiriferina
 * †Callospiriferina pinguis
 * †Calymene
 * CalymeneBlumenbachii-NaturalHistoryMuseum-August23-08.jpg †[[Calymene blumenbachii]]
 * †Calymene iladon
 * †Camarotoechia
 * †Camarotoechia billingsi – or unidentified comparable form
 * †Camarotoechia duplicata – tentative report
 * †Camarotoechia winiskensis – or unidentified comparable form
 * †Campophyllum – tentative report
 * †Cancrinella
 * †Cancrinella cancrini – or unidentified related form
 * †Cancrinella cancriniformis – or unidentified related form
 * †Cancrinella koninckiana – or unidentified related form
 * †Cancrinella tenuissima
 * †Caneyella – tentative report
 * †Capellinia
 * Capulus
 * †Cardiomorpha – tentative report
 * †Carinatina
 * †Caruthia – type locality for genus
 * †Caruthia borealis – type locality for species
 * †Caryocaris
 * †Catazyga
 * Museum Mensch und Natur - catenipora.jpg †[[Catenipora]]
 * †Catenipora jacovikii – or unidentified comparable form
 * †Catenipora robustus – or unidentified comparable form
 * †Catenipora rubra – or unidentified comparable form
 * †Cedaria
 * †Centronella
 * †Centronella navicella – or unidentified comparable form
 * †Ceratiacaris
 * †Ceratopea
 * †Ceratopea medfraensis – type locality for species
 * †Cernuolimbus
 * †Cernuolimbus longifrons
 * †Chaetetes
 * †Chaetetes milleporaceous
 * †Chaetetipora
 * †Chaetetipora ellesmerensis – or unidentified comparable form
 * †Chaoiella
 * †Chaoiella gruenewaldti – or unidentified related form
 * †Chapinella – type locality for genus
 * †Chapinella bucareliensis – type locality for species
 * †Charactophyllum
 * †Cheeneetnukia – type locality for genus
 * †Cheeneetnukia frydai – type locality for species
 * †Cheilocephalus
 * †Cheilocephalus expansus – type locality for species
 * †Cheiropyge
 * †Cheiropyge himalayensis
 * Trilobite Ordovicien 8127.jpg †[[Cheirurus]]
 * †Chirognathus – tentative report
 * †Chlupacispira – type locality for genus
 * †Chlupacispira spinosa – type locality for species
 * †Chonetes
 * †Chonetes capax – or unidentified related form
 * †Chonetes illinoisensis – or unidentified related form
 * †Chonetes manitobensis – or unidentified comparable form
 * †Chonetes timanicus – or unidentified related form
 * †Chonetes verneuile – or unidentified comparable form
 * †Chonetes verneuilianus – or unidentified related form
 * †Chonetina – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Chonetinella
 * †Chonetipustula
 * †Chonetipustula concentrica
 * †Chonetoidea – or unidentified related form
 * †Chonophyllum
 * †Choristites
 * †Christiania
 * †Christiania aseptata – type locality for species
 * †Chusenella
 * †Chusenella atlinensis – or unidentified loosely related form
 * Cladochonus coral KGS.jpg †[[Cladochonus]]
 * †Cladopora
 * †Cladospongia – type locality for genus
 * †Cladospongia alaskensis – type locality for species
 * †Clathronema
 * †Clathronema cingulata
 * †Clathronema cloughi
 * †Cleiothyridina
 * †Cleiothyridina milleri – type locality for species
 * †Cleiothyridina sublamellosa – or unidentified related form
 * †Cleiothyris
 * †Cleiothyris suborbiculoides – or unidentified related form
 * †Cliefdenella
 * †Cliefdenella alaskaensis
 * Climacograptus wilsoni Graptolite Fossils from Dob%27s Linn Scotland.jpg †[[Climacograptus]]
 * †Climacograptus antiquus – or unidentified related form
 * †Climacograptus bicornis
 * †Climacograptus eximius – or unidentified comparable form
 * †Climacograptus hughesi – or unidentified comparable form
 * †Climacograptus indivisus
 * †Climacograptus innotatus
 * †Climacograptus medius
 * †Climacograptus minutus – tentative report
 * †Climacograptus phyllophorus – or unidentified comparable form
 * †Climacograptus pungens
 * †Climacograptus rectangularis
 * †Climacograptus scalaris
 * †Climacograptus stenotelus
 * †Climacograptus trifilis
 * †Cliothyridina
 * †Cliothyridina incrassata – or unidentified related form
 * †Cliothyridina orbicularis – or unidentified related form
 * †Cliothyridina sublamellosa – or unidentified related form
 * †Clisiophyllum
 * †Clorinda
 * †Codonofusiella
 * †Coelocaulus
 * †Coelocaulus karlae – type locality for species
 * †Coeloconus
 * †Coelospira
 * †Coelotrochium
 * †Coenites
 * †Colpomya – tentative report
 * †Colpomya audae – or unidentified related form
 * †Colpomya hugini – or unidentified related form
 * †Compacoleus
 * Compositafossil.jpg †[[Composita]]
 * †Composita ambigua – or unidentified comparable form
 * †Composita bellula – or unidentified related form
 * †Comuquia
 * †Comuquia curvirostris – or unidentified related form
 * †Conchidium
 * †Conchidium alaskense
 * †Conchidium knighti
 * †Condrathyris
 * †Condrathyris perplexa
 * †Conocardium
 * †Contortophyllum
 * †Cordylodus – tentative report
 * †Corymbospongia
 * †Corymbospongia adnata
 * †Corymbospongia amplia – type locality for species
 * †Corymbospongia betella
 * †Corynexochus
 * †Corynexochus perforatus
 * †Corynexochus plumula
 * †Corynoides
 * †Corynoides tricornis
 * †Cotalagnostus – or unidentified comparable form
 * †Cotalagnostus lens
 * †Cranaena
 * †Cranaena romingeri – or unidentified comparable form
 * Isocrania costata Sowerby 1823.jpg †[[Crania (brachiopod)|Crania]]
 * †Craspedalosia – tentative report
 * †Craspedelia
 * †Craspedelia potterella – type locality for species
 * †Crassialveolites
 * †Craterophyllum – or unidentified comparable form
 * †Craticula – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Craticula gotlandica
 * †Crurithyris
 * †Crurithyris alaskensis – type locality for species
 * †Cryptacanthia
 * †Cryptacanthia compacta – or unidentified related form
 * †Cryptograptus
 * †Cryptograptus centrifugus – or unidentified comparable form
 * †Cryptograptus schaferi
 * †Cryptograptus tricornis
 * †Cyathactis
 * †Cyathaxonia
 * †Cyathodictya
 * †Cyathophylloides
 * †Cyathophyllum
 * †Cyclonema
 * †Cyclonema servus
 * Cyclopteris fossil cropped.png †[[Cyclopteris]] – tentative report
 * †Cyclospira
 * †Cyclospira elegantula
 * †Cyclospira orbus
 * †Cymbidium
 * †Cymbidium acutum
 * †Cymbidium retrorsum
 * †Cymostrophia
 * †Cymostrophia costatula – or unidentified comparable form
 * †Cyphaspis
 * †Cypricardella
 * †Cypricardina
 * †Cypricardina consimilis – or unidentified related form
 * †Cypricardinia
 * †Cypricardinia contexta
 * †Cyrolexis
 * †Cyrolexis superstes – or unidentified related form
 * †Cyrtia
 * †Cyrtina
 * †Cyrtina billingsi – or unidentified comparable form
 * †Cyrtinaella
 * †Cyrtinaella undulata
 * Cyrtoceras NT small.jpg †[[Cyrtoceras]]
 * †Cyrtospira
 * †Cyrtospirifer
 * †Cyrtospirifer buddingtoni – type locality for species
 * †Cyrtospirifer paridaensis
 * †Cystihalysites
 * †Cystiphylloides
 * †Cystiphyllum
 * †Cystodictya
 * †Cystodictya lineata – or unidentified related form
 * †Cystodictya pustulosa – or unidentified related form
 * †Cystostroma
 * †Cystothalamiella
 * †Cystothalamiella alaskaensis
 * †Cystothalamiella ducta
 * †Cystothalamiella irregularis – type locality for species
 * †Cystothalamiella polyducta
 * Cytherella – tentative report
 * †Cyztograptus

D

 * †Daidia
 * †Daidia cerithioides
 * †Daidia sewardensis
 * †Dalmanella
 * †Dalmanella occlusa
 * SilurianTrilobite.jpg †[[Dalmanites]]
 * †Dasometopus
 * †Dasometopus breviceps
 * †Dechenella
 * †Decorospira
 * †Decorospira lepaini – type locality for species
 * †Decorospira minutula – type locality for species
 * †Decorospira tasselli
 * †Deiracorallium
 * †Delthyris
 * †Delthyris sulcatus
 * †Deltopecten
 * †Deltopecten caneyanus – or unidentified related form
 * †Deltopecten wyandotte – or unidentified related form
 * †Dendrograptus
 * †Dendrostella
 * †Dendrostella rhenana – or unidentified comparable form
 * Dentalium octangulatum 01.JPG †[[Dentalium (genus)|Dentalium]]
 * †Dentalium hecetaensis
 * †Derbyia
 * †Derbyia bennetti – or unidentified related form
 * †Derbyia grandis – or unidentified comparable form
 * †Derbyia robusta – or unidentified related form
 * †Diambonia
 * †Diambonia discuneata
 * †Diaphragmus
 * †Dicellograptus
 * †Dicellograptus caduceus – or unidentified comparable form
 * †Dicellograptus elegans – or unidentified comparable form
 * †Dicellograptus gurleyi
 * †Dicellograptus sextans
 * †Dicellograptus smithi – or unidentified comparable form
 * †Dicoelosia
 * †Dicoelosia jonesridgensis
 * †Dicranograptus
 * †Dicranograptus contortus – tentative report
 * †Dicricoconus
 * †Dicricoconus dutroi
 * †Dicricoconus mesodevonicus
 * †Dicricoconus triannulatus
 * †Dictyoclostus
 * †Dictyoclostus gallatinensis – or unidentified related form
 * †Dictyoclostus semireticulatus
 * †Dictyoclostus tartaricus
 * †Dictyonema
 * Didymograptus murchisoni small.jpg †[[Didymograptus]]
 * †Didymograptus extensus – or unidentified comparable form
 * †Didymograptus nitidus – or unidentified comparable form
 * †Didymograptus sagitticaulis
 * †Didymograptus serratulus
 * †Dielasma
 * †Dielasma arkansanum – or unidentified related form
 * †Dielasma bovidens – or unidentified related form
 * †Dielasma formosum – or unidentified related form
 * †Dielasma supracarbonicum – or unidentified related form
 * †Digonophyllum
 * †Dimorphograptus
 * †Dimorphograptus confertus
 * †Dimorphograptus physophora
 * †Diorthelasma
 * †Diorthelasma parvum
 * †Diparelasma
 * †Diphyphyllum
 * †Diplochone
 * Diplograptus simplex.png †[[Diplograptus]]
 * †Diplograptus cyperoides – or unidentified comparable form
 * †Diplograptus elongatus
 * †Diplograptus euglyptus
 * †Diplograptus hughesi
 * †Diplograptus inutilis
 * †Diplograptus modestus
 * †Diplograptus mucroterminatus
 * †Diplograptus multidens – or unidentified related form
 * †Diplograptus nicolsoni – or unidentified comparable form
 * †Diplopora – tentative report
 * †Disphyllum
 * †Disphyllum catenatum – or unidentified comparable form
 * †Disphyllum goldfussi – or unidentified comparable form
 * †Disphyllym – tentative report
 * †Diversograptus
 * †Doleroides
 * †Doleroides panna – or unidentified related form
 * †Donaldiella
 * †Donaldospira
 * †Donaldospira pertusa
 * †Dorypyge
 * †Dorypyge olenekensis – or unidentified comparable form
 * †Drepanodus
 * †Drepanoistodus
 * †Drepanoistodus suberectus
 * Drepanophycus sp.jpg †[[Drepanophycus]]
 * †Droharhynchia
 * †Droharhynchia rzhonsnitskayae – type locality for species
 * †Dubovikovia
 * †Dubovikovia kuzmini – or unidentified comparable form
 * †Dunbarula
 * †Dunderbergia
 * †Dunderbergia seducta – type locality for species
 * †Duolobella – type locality for genus
 * †Duolobella sandiae – type locality for species
 * †Dutrochus – type locality for genus
 * †Dutrochus alaskensis – type locality for species
 * †Dyoros
 * †Dyoros spitzbergianus – or unidentified comparable form
 * †Dytremacephalus – tentative report

E

 * †Echinoconchus
 * †Echinoconchus punctatus
 * †Echyropora – tentative report
 * †Ectomaria
 * †Ectomaria orientalis
 * †Ectomaria pagoda – or unidentified comparable form
 * †Ectomaria prisca – or unidentified comparable form
 * †Edmondia
 * †Ekvasophyllum
 * †Elburgia
 * †Elburgia disgranosa – type locality for species
 * †Eleutherokomma
 * †Eleutherospira
 * †Eleutherospira medfraensis
 * † Ella – tentative report
 * †Ella simensis – or unidentified related form
 * †Ellesmeroceras
 * Elrathia kingii growth series.jpg †[[Elrathia]]
 * †Elrathia alaskensis – type locality for species
 * †Emanuella
 * †Emanuella altus
 * †Emanuella neumani
 * †Emmonsia
 * †Endothyra
 * †Endothyra bowmani – or unidentified related form
 * †Entactinia
 * †Entactinia modesta
 * †Enteletes – tentative report
 * †Entelophyllum – tentative report
 * †Entomis
 * †Entomis pelagica
 * †Eoasianites
 * †Eoconchidium
 * †Eognathodus
 * †Eognathodus sulcatus
 * †Eomarginifera
 * †Eomarginifera longispinus
 * †Eomoelleritia – tentative report
 * †Eopteria
 * †Eopteria richardsoni
 * †Eoreticularia – tentative report
 * †Eoschuchertella
 * †Eospirifer
 * †Epiphyton
 * †Epitomyonia
 * †Epitomyonia relicina
 * †Euchondria – tentative report
 * †Euchondria neglecta – or unidentified related form
 * †Euconospira
 * †Euconospira conula – or unidentified related form
 * †Eumetria
 * †Eumetria verneuiliana
 * †Eunema
 * †Eunema quadrisulcata – or unidentified comparable form
 * †Euomphalopteris – tentative report
 * †Euomphalopterus – type locality for genus
 * †Euomphalopterus liratus – type locality for species
 * Euomphalus fossil cropped.png †[[Euomphalus]]
 * †Euomphalus brooksensis
 * †Euomphalus bundtzeni
 * †Euomphalus planodorsatus – or unidentified related form
 * †Euomphalus planorbis
 * †Euomphalus utahensis – or unidentified related form
 * †Euphemites
 * †Euphemites carbonarius
 * †Euryzone

F

 * †Faberophyllum
 * †Falodus
 * †Farewellia – type locality for genus
 * †Farewellia heidelbergerae – type locality for species
 * †Fasciculatia
 * †Fasciculatia striatoparadoxa
 * †Fasciphyllum – tentative report
 * FavositesOrdovicianIndiana.jpg †[[Favosites]]
 * †Favosites emmonsi – or unidentified comparable form
 * †Favosites hemispericus
 * †Favosites hemisphericus
 * †Favosites limitaris
 * †Favosites radiciformis
 * †Fenestella
 * †Filigreenia
 * †Filigreenia circularis
 * †Finkelnburgia
 * †Fistulella
 * †Fistulella undosa
 * †Fistulipora
 * †Fletcheria – tentative report
 * †Fluctuaria
 * †Fluctuaria undata – or unidentified related form
 * †Follicucullus
 * †Follicucullus monacanthus – or unidentified related form
 * †Foordites
 * †Foordites platypleura – or unidentified comparable form
 * †Fusispira
 * Fusulinid limestone, Upper Pennsylvanian; Elk County KS.jpg †Fusulina
 * †Fusulina elongata – or unidentified related form
 * †Fusulinella
 * †Fusulinella eopulchra – or unidentified comparable form

G

 * †Gasterocoma – tentative report
 * †Gasterocoma bicauli
 * †Gastrioceras
 * †Gastrioceras nolinense – or unidentified related form
 * †Gelidorthis
 * †Gelidorthis perisiberiaensis
 * Geragnostus mediterraneus CRF cropped.jpg †[[Geragnostus]]
 * †Gervillia
 * †Gervillia longa – or unidentified related form
 * †Girtyella
 * †Girtyocoelia – type locality for genus
 * †Girtyocoelia epiporata
 * †Girtyocoelia minima
 * †Girvanella
 * †Girvanella problematica
 * †Glaberagnostus
 * †Glaberagnostus cicer
 * †Glabrocingulum
 * †Glabrocingulum grayvillense – or unidentified related form
 * †Globoendothyra
 * †Glossograptus
 * †Glossograptus dentatus – or unidentified comparable form
 * †Glossograptus echinatus – or unidentified comparable form
 * †Glossograptus hincksii
 * †Glossograptus horridus
 * †Glossograptus hystrix – or unidentified related form
 * †Glyptograptus
 * †Glyptograptus enodis – or unidentified comparable form
 * †Glyptograptus gnomus
 * †Glyptograptus incertus
 * †Glyptograptus laciniosus
 * †Glyptograptus lanpherei
 * †Glyptograptus tamariscus
 * †Glyptopora
 * †Gomphoceras
 * †Goniatites
 * †Goniocladia – tentative report
 * †Goniophora
 * †Goniophora thula – type locality for species
 * †Grammysia
 * †Granularaspis
 * †Graptospongia
 * RugosaOrdovician.jpg †[[Grewingkia]]
 * †Grypophyllum
 * †Gypidula
 * †Gypidula cornuta
 * †Gypidula intervenicus – or unidentified comparable form
 * †Gypidula optatus
 * †Gypidula orbitatus
 * †Gypidula pelagica
 * †Gypidula perryi
 * †Gypidula upatensis
 * †Gypiduloides
 * †Gypiduloides craigenensis
 * †Gypospirifer
 * †Gypospirifer condor
 * †Gyronema

H

 * †Hallograptus
 * †Hallograptus mucronatus
 * †Halysites
 * †Haplistion – tentative report
 * †Haplospira
 * †Haplospira craigi – type locality for species
 * †Hardyoides
 * †Hardyoides aspinosa – type locality for species
 * †Harperoides – type locality for genus
 * †Harperoides alaskensis – type locality for species
 * Harpides grimmi Palaeontological exhibition Prague cropped.jpg †[[Harpides]]
 * †Harpidium
 * †Harpidium insignis
 * †Harpidium latus
 * †Harpidium rotundus
 * †Hartshillia
 * †Hartshillia clivosa
 * †Hecetaphyton
 * †Hecetaphyton alaskense
 * †Hecetastoma – type locality for genus
 * †Hecetastoma gehrelsi – type locality for species
 * †Hedstroemia – tentative report
 * †Hedstromophyllum
 * †Helicotoma
 * †Helicotoma blodgetti – type locality for species
 * †Helicotoma robinsoni – type locality for species
 * †Heliolites
 * †Heliophyllum
 * †Helioplasmolites
 * Dolichometopidae - Hemirhodon amplipyge.JPG †[[Hemirhodon]]
 * †Hemitrypa
 * †Hercynella
 * †Hercynella bohemica
 * †Hercynella nobilis
 * †Hexagonaria
 * †Hindeodus
 * †Holopea
 * †Holopella
 * †Homagnostus
 * †Homagnostus alaskensis – type locality for species
 * †Hormospongia – type locality for genus
 * †Hormospongia acara – type locality for species
 * †Hormospongia diarteria – type locality for species
 * †Hormospongia labyrinthica – type locality for species
 * †Hormotoma
 * †Horridonia
 * †Horridonia horrida
 * †Hostimella
 * †Howellella
 * †Howellella amsdeni
 * †Howellella nucula
 * †Howellella yacutica
 * †Howellites
 * †Howellites amsdeni – type locality for species
 * †Howittia
 * †Howittia haideri
 * †Hustedia
 * †Hustedia meekana – or unidentified related form
 * †Hustedia remota – or unidentified related form
 * †Hustedograptus
 * †Hustedograptus teretiusculus
 * †Hypagnostus
 * †Hypomphalocirrus
 * †Hypomphalocirrus rugosus – or unidentified comparable form
 * †Hypothyridina
 * †Hypothyridina magister

I

 * †Icriodus
 * †Icriodus angustoides
 * †Icriodus taimyricus
 * †Iddingsia
 * †Iddingsia relativa – type locality for species
 * †Idiognathodus
 * †Idiostroma
 * †Imperatoria
 * †Imperatoria media
 * †Iowaphyllum
 * †Iowaphyllum johanni – or unidentified comparable form
 * †Iowatrypa
 * †Iowatrypa owenensis
 * †Iskutella
 * †Iskutella gunningi
 * †Isochilina
 * †Isograptus
 * †Isograptus forcipiformis
 * †Isograptus manubriatus – or unidentified comparable form
 * †Isorthis
 * †Ivdelinia

J

 * †Janius
 * †Janius velatus – or unidentified comparable form
 * †Jedria
 * †Jedria deckeri
 * †Johnsonathyris – type locality for genus
 * †Johnsonathyris adrianensis – type locality for species
 * †Juraspis
 * †Juraspis schabanovi
 * †Juresania
 * †Juresania juresanensis – or unidentified related form

K

 * †Kahlerina
 * †Karavankina
 * †Karavankina fasciata – or unidentified related form
 * †Ketophyllum
 * †Kindleina – type locality for genus
 * †Kindleina suemezensis – type locality for species
 * Kionoceras doricum.JPG †[[Kionoceras]]
 * †Kirkidium
 * †Kirkirhynchus
 * †Kirkirhynchus reesidei
 * †Kirkospira – type locality for genus
 * †Kirkospira glacialis – type locality for species
 * †Kirkospira tongassensis – type locality for species
 * †Kitikamispira
 * †Kitikamispira ormistoni
 * †Klakesia
 * †Kochiproductus
 * †Kochiproductus porrectus – or unidentified related form
 * †Komiella
 * †Komiella gilberti – type locality for species
 * †Komiella ostiolata – or unidentified related form
 * Kootenia fossil cropped.png †[[Kootenia]]
 * †Kootenia anabarensis – or unidentified comparable form
 * †Kootenia granulospinosa – type locality for species
 * †Kootenia serrata – or unidentified comparable form
 * †Krausella
 * †Krotovia
 * †Krotovia pustulata – or unidentified related form
 * †Kuskokwimia – type locality for genus
 * †Kuskokwimia moorei – type locality for species
 * †Kuvelousia
 * †Kuvelousia sphiva
 * †Kuvelousia weyprechti – or unidentified comparable form

L

 * †Labechia
 * †Labyrinthites
 * †Lacunoporaspis
 * Laevidentalium
 * †Laevidentalium venustum – or unidentified related form
 * †Laioporella
 * †Laioporella pyramidata – or unidentified related form
 * †Lamprophyllum
 * †Latentifistula
 * †Laticrura
 * †Laticrura pionodema
 * †Lecanospira – tentative report
 * †Leioclema
 * †Leiorhynchus
 * †Leiorhynchus greenianum – or unidentified related form
 * †Lejopyge
 * †Lejopyge calva
 * Lejopyge laevigata.jpg †[[Lejopyge laevigata]]
 * †Leperditia
 * †Lepidocoleus
 * †Lepidocoleus britannicus
 * †Leptaena
 * †Leptaena alaskensis – type locality for species
 * †Leptathyris
 * †Leptathyris borki
 * †Leptellina
 * †Leptellina occidentalis
 * †Leptelloidea
 * †Leptelloidea leptelloides
 * †Leptodesma
 * †Leptograptus
 * †Leptostrophia
 * †Libumella – tentative report
 * †Licharewia
 * †Lichas
 * †Ligiscus
 * †Ligiscus smithi – type locality for species
 * Lima
 * †Linguagnostus
 * †Linguagnostus gronwalli
 * †Lingula
 * †Lingula freboldi
 * Linguopugnoides
 * †Linguopugnoides carens
 * †Linograptus
 * †Linograptus posthumus – or unidentified related form
 * †Linoproductus
 * †Linoproductus cora
 * †Linoproductus lineatus – or unidentified related form
 * †Linoproductus tenuistriatus – or unidentified related form
 * †Liosotella
 * †Liosotella proboscidea – or unidentified comparable form
 * †Liospira
 * †Liospira micula
 * †Liospira progne – or unidentified comparable form
 * †Lissatrypa – tentative report
 * †Lissochonetes
 * †Lissochonetes geinitzianus – or unidentified related form
 * †Lissochonetes morahensis – or unidentified related form
 * †Lissochonetes superba – or unidentified comparable form
 * †Lithostrotion
 * †Lithostrotion mclareni
 * †Lithostrotion portlocki – or unidentified related form
 * †Lithostrotion sinuosum
 * †Lithostrotion warreni
 * †Lithostrotionella
 * †Lithostrotionella banffensis
 * †Lithostrotionella birdi
 * †Loganograptus
 * †Lonsdaleia
 * †Lophophyllum
 * †Lophospira
 * †Lophospira perangulata – or unidentified comparable form
 * †Lophospira serrulata – or unidentified related form
 * †Loxonema
 * †Loyolophyllum
 * Lucinidae - Lucina species.JPG †[[Lucina (bivalve)|Lucina]]
 * †Lucina proavia – or unidentified comparable form
 * †Ludlovia
 * †Ludlovia multispora
 * †Lunucammina
 * †Lunulazona
 * †Lunulazona sablei – type locality for species
 * †Lykocustiphyllim – tentative report
 * †Lyrielasma
 * †Lytospira
 * †Lytospira subrotunda
 * †Lytvophyllum – tentative report
 * †Lytvophyllum hongi

M

 * †Macgeea
 * †Maclurina
 * †Maclurina manitobensis – or unidentified comparable form
 * †Maclurites
 * †Maclurites magnus – or unidentified related form
 * †Marginifera
 * †Marginifera involuta
 * †Marginifera juresanensis – or unidentified comparable form
 * †Marginifera lebedevi – or unidentified related form
 * †Marginifera splendens – or unidentified related form
 * †Marginifera typica – or unidentified related form
 * †Marinurnula
 * †Marinurnula timanicum – or unidentified comparable form
 * †Marjumia
 * †Marjumia callas
 * †Martinia
 * †Martinia maia – or unidentified comparable form
 * †Martiniopsis
 * †Mastigospira
 * †Mastigospira weberae
 * †Medfracaulus – type locality for genus
 * †Medfracaulus cooki – type locality for species
 * †Medfracaulus turriformis
 * †Medfraspongia
 * †Medfraspongia tubulara
 * †Medfrazyga – type locality for genus
 * †Medfrazyga clauticae – type locality for species
 * †Medfrazyga gilmulli – type locality for species
 * †Medlicottia
 * †Medlicottia orbigiana – or unidentified related form
 * †Meekella – tentative report
 * †Meekospira
 * †Megagnostus
 * †Megagnostus laevis
 * †Megagnostus resecta
 * †Megalomus
 * †Megousia
 * †Megousia aagardi
 * †Mehlina
 * †Menophyllum – tentative report
 * †Mephiarges – tentative report
 * Meristella two views.png †[[Meristella]]
 * †Meristella barrisi – or unidentified comparable form
 * †Meristella ceras – or unidentified comparable form
 * †Meristella tumida – tentative report
 * †Meristina
 * †Mesodouvillina
 * †Mesofavosites
 * Mesophyllum
 * †Mesophyllum dachsbergi
 * †Metadoliolina – tentative report
 * †Michelinia
 * †Michelinoceras – tentative report
 * †Micidus
 * †Micidus stellae
 * †Microplasma
 * †Miculiella – or unidentified comparable form
 * †Mizzia – tentative report
 * †Modiolopsis
 * †Modiolopsis modiolaris – or unidentified related form
 * †Modiolus – tentative report
 * †Modiomorpha
 * †Modocia
 * †Modocia compressa – type locality for species
 * †Modocia transversa – type locality for species
 * †Moelleritia
 * †Moelleritia canadensis
 * †Monadotoechia – tentative report
 * Spirograptus spiralis cropped.jpg †[[Monograptus]]
 * †Monograptus acinaces
 * †Monograptus atavus
 * †Monograptus bohemicus
 * †Monograptus buddingtoni
 * †Monograptus calamistratus
 * †Monograptus clingani – or unidentified related form
 * †Monograptus convolutus
 * †Monograptus crenularis – or unidentified comparable form
 * †Monograptus crinitus
 * †Monograptus cyphus
 * †Monograptus difformis – or unidentified comparable form
 * †Monograptus dubius
 * †Monograptus gregarius
 * †Monograptus incommodus – or unidentified comparable form
 * †Monograptus involutus – or unidentified comparable form
 * †Monograptus nilssoni
 * †Monograptus noyesensis
 * †Monograptus pacificus
 * †Monograptus praedubius – or unidentified related form
 * †Monograptus priodon
 * †Monograptus pseudodubius
 * †Monograptus raitzhainesis – or unidentified related form
 * †Monograptus revolutus
 * †Monograptus scanicus
 * †Monograptus tenuis
 * †Monograptus thomasi – or unidentified related form
 * †Monograptus tumescens
 * †Monograptus uncinatus
 * †Monograptus undulatus
 * †Monograptus varians
 * †Monograptus vulgaris – or unidentified comparable form
 * †Monograptus yukonensis
 * †Monolaminospongia – type locality for genus
 * †Monolaminospongia gigantia – type locality for species
 * †Monorakos
 * †Monorakos kledos – type locality for species
 * †Morania
 * †Morania nixonforkensis – type locality for species
 * †Morania wagneri – type locality for species
 * Mucrospirifer mucronatus Silica Shale.JPG  †[[Mucrospirifer]]
 * †Mucrospirifer refugiensis – type locality for species
 * †Multiconus
 * †Multisolenia
 * †Murchisonia
 * †Myalina
 * †Myriospirifer
 * †Myriospirifer myriofila – type locality for species
 * †Mytilarca
 * †Mytilarca boucoti – type locality for species

N

 * †Nankinella
 * †Nanochilina
 * †Nanochilina gubanovi – type locality for species
 * †Nanukidium
 * †Nanukidium cunninghamensis – or unidentified comparable form
 * †Naticella
 * Neritopsidae - Naticopsis.JPG †[[Naticopsis]]
 * †Naticopsis bowsheri
 * †Naticopsis carleyana – or unidentified related form
 * †Naticopsis suturicompta
 * †Nazarovella
 * †Nemagraptus
 * †Nemagraptus gracilis
 * †Nematosalpinx
 * †Nematosalpinx dichotomica
 * †Nematosalpinx hormathodes – type locality for species
 * †Neochonetes
 * †Neochonetes granulifer – or unidentified related form
 * †Neogondolella
 * †Neogondolella idahoensis
 * Trigonotretidae - Neospirifer ravana.JPG †[[Neospirifer]]
 * †Neospirifer cameratus
 * †Neospirifer fasciger – or unidentified related form
 * †Neospirifer striatus – tentative report
 * †Nezamyslia
 * †Nezamyslia jucunda – or unidentified related form
 * †Nicollidina
 * †Nicollidina brevis
 * †Nicollidina remscheidensis – or unidentified comparable form
 * †Nileus
 * †Nileus armadillo
 * †Niobella
 * †Niobella kanauguki – type locality for species
 * †Nipponophyllum
 * †Nipponophyllum aseptatum – or unidentified comparable form
 * †Nodospira – type locality for genus
 * †Nodospira ornata – type locality for species
 * †Nordospira
 * †Nordospira vostokovae – type locality for species
 * †Nordotoechia – tentative report
 * †Nowakia
 * †Nowakia acuaria
 * †Nowakia barrandei
 * †Nowakia parabarrandei – type locality for species
 * †Nucleospira
 * †Nucleospira hecetensis
 * Nuculidae - Nucula piacentina.jpg [[Nucula]]
 * †Nucula shumardiana – or unidentified related form
 * Nuculana – tentative report
 * †Nuculites

O

 * †Oanduporella
 * †Oanduporella kuskokwimensis
 * †Odontomaria
 * †Odontomaria cheeneetnukensis – type locality for species
 * †Odontospirifer
 * †Oistodus
 * †Oistodus parallelus
 * †Oistodus venustus – or unidentified comparable form
 * †Olenaspella
 * †Olenaspella evansi
 * †Oncagnostus
 * †Oncagnostus tumidosus
 * †Onchonotopsis
 * †Onchonotopsis occidentalis – type locality for species
 * †Oonoceras
 * †Opsiconidion
 * †Orbiculoidea
 * †Orecopia
 * †Orecopia mccoyi – or unidentified comparable form
 * †Oriostoma
 * †Oriostoma angulatum – or unidentified comparable form
 * †Oriostoma princeps
 * †Orthis
 * †Orthis arcuata – or unidentified comparable form
 * †Orthoceras
 * †Orthoceras anguliferas – or unidentified comparable form
 * †Orthograptus
 * †Orthograptus bellulus
 * †Orthograptus calcaratus
 * †Orthograptus eberleini
 * †Orthograptus insectiformis
 * †Orthograptus mutabilis – or unidentified comparable form
 * †Orthograptus quadrimucronatus
 * †Orthograptus truncatus
 * †Orthograptus vesiculosus
 * †Orthonota
 * †Orthonychia
 * †Orthophyllum – tentative report
 * †Orthotetes
 * †Orthotetes chemungensis – or unidentified comparable form
 * †Orthotetes crenistria
 * †Orthotetes keokuk – or unidentified related form
 * †Orthotichia – tentative report
 * †Orthotichia morganiana – or unidentified related form
 * †Ortonia – tentative report
 * †Oulodus
 * †Overtonia – tentative report
 * †Overtonia fimbriata – or unidentified related form
 * †Ozarkodina
 * †Ozarkodina confluens
 * †Ozarkodina eberleini – type locality for species
 * †Ozarkodina paucidentata – or unidentified comparable form

P

 * †Pachyfavosites
 * †Pachyphloia
 * †Pachypora
 * †Pachystrophia
 * †Pachystrophia devexa – or unidentified comparable form
 * †Pachystrophia gotlandicus
 * †Paeckelmanella
 * †Paeckelmanella dieneri – or unidentified related form
 * †Paffrathopsis
 * †Paffrathopsis nana – or unidentified related form
 * Pagetia taijiangensis 2.jpg †[[Pagetia]]
 * †Palaeolima
 * †Palaeolima retifera – or unidentified related form
 * †Palaeophyllum – or unidentified comparable form
 * †Palaeoscheda
 * †Palaeoscheda crassimuralis
 * †Palaeowingella – type locality for genus
 * †Palaeowingella farewellensis – type locality for species
 * †Palaeozygopleura
 * †Paleofavosites
 * †Paleoxyphostylus
 * †Paleoxyphostylus variospina
 * †Palliseria
 * †Palliseria robusta
 * †Panderodus
 * †Panderodus gracllis – or unidentified comparable form
 * †Pandorinellina
 * †Pandorinellina exigna
 * †Pandorinellina exigua
 * †Pandorinellina expansa
 * †Pandorinellina steinhornensis
 * †Panenka
 * †Paracybantyx
 * †Paracybantyx occidentalis – type locality for species
 * Paradoxides davidis.jpg  †[[Paradoxides]]
 * †Parafusulina – tentative report
 * †Paraglossograptus
 * †Paraglossograptus tentaculatus – or unidentified comparable form
 * †Paraliospira
 * †Paraliospira angulata
 * †Paraliospira mundula
 * †Paraliospira planata – or unidentified related form
 * †Parallelodon
 * †Paraparchites
 * †Paraparchites carbonarius – or unidentified related form
 * †Paraphillipsia
 * †Paraphillipsia aglypta – type locality for species
 * †Parapugnax
 * †Parapugnax schmidti
 * †Pararachnastraea
 * †Pararachnastraea gracilis – or unidentified related form
 * †Parasolenopleura
 * †Parastriatopora
 * †Parawedekindellina
 * †Parawedekindellina pechorica – or unidentified comparable form
 * †Parehmania
 * †Parehmania lata – or unidentified comparable form
 * †Parisograptus
 * †Parisograptus caduceus
 * †Paronaella – tentative report
 * †Paronaella triporosa
 * †Paupospira
 * †Paupospira burginensis – or unidentified comparable form
 * Pecopteris villosa.jpg †[[Pecopteris]]
 * †Pecopteris arborescens
 * †Pecopteris hemitelioides
 * †Pecopteris unita
 * †Pedderia – type locality for genus
 * †Pedderia fragosa – type locality for species
 * †Pelekysgnathus
 * †Pelekysgnathus klamathensis
 * †Pelypora
 * †Peneckiella
 * †Penekiella
 * †Pentamerella
 * PentamerusSilurian.jpg †[[Pentamerus]]
 * †Peridon
 * †Peridon aculeatus
 * †Perimecocoelia
 * †Perimecocoelia semicostata
 * †Permophricodothyris
 * †Permophricodothyris nodosa – or unidentified comparable form
 * †Pernipecten
 * †Pernopecten
 * †Pernopecten aviculatus – or unidentified related form
 * †Pernopecten ohioensis – or unidentified related form
 * †Peronopsis
 * †Peronopsis gaspensis – or unidentified comparable form
 * †Petalograptus
 * †Petalograptus minor
 * †Petalograptus palmeus
 * †Petrozium
 * †Phacellophyllum
 * Phalagnostus prantli 2.jpg †[[Phalagnostus]]
 * †Phalagnostus bituberculatus
 * †Phanerotrema
 * †Phaulactis
 * †Phaulactis angusta – or unidentified comparable form
 * †Phaulactis cyathophylloides – or unidentified comparable form
 * †Phillipsastrea
 * †Phillipsia
 * †Phillipsia bufo – tentative report
 * †Phillipsia majus – type locality for species
 * †Phillipsia megalopos – type locality for species
 * †Pholadostrophia – tentative report
 * †Pholidocidaris
 * †Phragmodus
 * †Phragmorthis
 * †Phragmorthis buttsi
 * †Phricodothyris
 * †Phricodothyris guadalupensis – or unidentified related form
 * Phyllograptidae - Phyllograptus species cropped.jpg †[[Phyllograptus]]
 * †Phyllograptus anna – or unidentified comparable form
 * †Phylloporella – tentative report
 * †Pinacites
 * †Pinacites jugleri
 * †Pinegathyris – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Pinegathyris royssiana – or unidentified related form
 * †Pinna
 * †Pinnatopora
 * †Plagioglypta
 * †Planitrochus
 * †Plasmophyllum
 * PlatycerasLoganOhio.jpg †[[Platyceras]]
 * †Platycrinites
 * †Platycrinites nikondaense – type locality for species
 * †Platycrinus
 * †Platyschisma – tentative report
 * Pleurotomaria
 * †Plicogypa
 * †Plicogypa kayseri – or unidentified comparable form
 * Conodonts.jpg †[[Polygnathus]]
 * †Polygnathus alexanderensis
 * †Polygnathus angusticostatus
 * †Polygnathus angustipennatus
 * †Polygnathus aspelundi
 * †Polygnathus borealis
 * †Polygnathus brevis
 * †Polygnathus churkini
 * †Polygnathus costatus
 * †Polygnathus eberleini
 * †Polygnathus eiflius
 * †Polygnathus inversus
 * †Polygnathus kennettensis
 * †Polygnathus linguiformis
 * †Polygnathus pacificus
 * †Polygnathus parawebbi
 * †Polygnathus perbonus – or unidentified related form
 * †Polygnathus praetrigonicus
 * †Polygnathus pseudofoliatus
 * †Polygnathus robusticostatus
 * †Polygnathus samueli
 * †Polygnathus sinuosus
 * †Polygnathus trigonicus
 * †Polygnathus unicornis
 * †Polygnathus xylus
 * †Polyplacospongia – type locality for genus
 * †Polyplacospongia nodosa – type locality for species
 * †Polypora
 * †Polythalamia
 * †Polythalamia americana
 * †Prampyx
 * †Prampyx difformis
 * †Prioniodina
 * †Prioniodina flabellum
 * †Prisochiton
 * †Proampyx
 * †Proampyx acuminatus
 * †Prodentalium
 * †Productella
 * †Productella hallana
 * †Productus
 * †Productus burlingtonesis – or unidentified related form
 * †Productus gallatinenesis – or unidentified related form
 * †Productus giganteus
 * †Productus gruenwaldti – or unidentified related form
 * †Productus hirsutiformis
 * †Productus inflatus – or unidentified related form
 * †Productus jakovlevi – or unidentified related form
 * †Productus longus – or unidentified related form
 * †Productus mesialis – or unidentified related form
 * †Productus ovatus – tentative report
 * †Productus sampsoni – or unidentified related form
 * †Productus samsoni – or unidentified related form
 * †Productus setiger – or unidentified related form
 * †Productus striatus – or unidentified related form
 * Proetus concinnus reconstruction cropped.png †[[Proetus (trilobite)|Proetus]]
 * †Proetus romanooski
 * †Prohedinia
 * †Prohedinia brevifrons
 * †Protathyris
 * †Protathyris pacificana
 * †Proteoceras
 * †Proteoceras obliquum
 * †Proteoceras tubulara
 * †Protolonsdaleiastraea
 * †Protolonsdaleiastraea cargalensis – or unidentified related form
 * †Protowentzelella
 * †Protowentzelella cystosa
 * †Pseudagnostus
 * †Pseudagnostus communis
 * †Pseudamplexus
 * †Pseudamplexus princeps – or unidentified comparable form
 * †Pseudoalbaillella
 * †Pseudoalbaillella longicornis – or unidentified related form
 * Rugosa - Pseudoamplexus.JPG †[[Pseudoamplexus]]
 * †Pseudoamplexus altaicus
 * †Pseudobelodina
 * †Pseudobelodina adentata – or unidentified comparable form
 * †Pseudobelodina vulgaris – or unidentified related form
 * †Pseudobornia
 * †Pseudobornia ursina
 * †Pseudoclimacograptus
 * †Pseudoclimacograptus marathonensis – or unidentified comparable form
 * †Pseudoclimacograptus scharenbergi
 * †Pseudoclimacograptus undulatus – or unidentified comparable form
 * †Pseudocryptaenia – tentative report
 * †Pseudocryptaenia majewskwi – type locality for species
 * †Pseudodoliolina
 * †Pseudodoliolina oliviformis
 * †Pseudofusulinella
 * †Pseudofusulinella praeantiqua – or unidentified comparable form
 * †Pseudoharttina
 * †Pseudoharttina kayi – type locality for species
 * Pseudomelania shell cropped.png †[[Pseudomelania]]
 * †Pseudomicroplasma – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Pseudomonotis – tentative report
 * †Pseudomphalotrochus
 * †Pseudomphalotrochus linsleyi
 * †Pseudophillipsia – tentative report
 * †Pseudophorus
 * †Pseudophorus profundus – or unidentified comparable form
 * †Pseudoporefieldia
 * †Pseudoporefieldia micella
 * †Pseudotryplamsa – tentative report
 * †Pseudotryplamsa altaica – or unidentified comparable form
 * †Pseudotryplasma
 * †Pseudotryplasma altaica – or unidentified comparable form
 * †Pseudotryplasma altaicus – or unidentified comparable form
 * †Psilocamara
 * Psilophyton dawsonii-rev.jpg †[[Psilophyton]]
 * †Pteria – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Pterinea
 * †Pterinopecten
 * †Pterocephalia
 * †Pterocephalia constricta – type locality for species
 * †Pterospirifer
 * †Pterospirifer alatus
 * †Ptychagnostus
 * †Ptychagnostus aculeatus
 * †Ptychagnostus puncturosus
 * †Ptychoglyptus
 * †Ptychoglyptus alaensis – type locality for species
 * †Ptychoglyptus pauciradiatus
 * †Ptychomphalina
 * †Ptychophyllum
 * †Ptychopleurella
 * †Ptychopleurella uniplicata
 * †Pugnax
 * †Pugnax pugnus
 * †Pugnax utah – or unidentified related form
 * †Pulchratia – tentative report
 * †Purdonella – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Purdonella nikitini – or unidentified related form
 * †Pustula
 * †Pustula alternata – or unidentified related form
 * †Pustula biseriata – or unidentified related form
 * †Pustula blairi – or unidentified related form
 * †Pustula carringtoniana – or unidentified related form
 * †Pustula concentrica – or unidentified related form
 * †Pustula distorta – or unidentified related form
 * †Pustula eximia – or unidentified related form
 * †Pustula indianensis – or unidentified related form
 * †Pustula irginae – or unidentified related form
 * †Pustula magnituberculata – or unidentified related form
 * †Pustula millespinosa – or unidentified related form
 * †Pustula morbilliana – or unidentified related form
 * †Pustula nikitini – or unidentified related form
 * †Pustula pilosa – or unidentified related form
 * †Pustula plicatilis – or unidentified related form
 * †Pustula pseudaculeata – or unidentified related form
 * †Pustula punctata
 * †Pustula rugata – or unidentified related form
 * †Pustula semicostata – or unidentified related form
 * †Pustula spinulosa – or unidentified related form
 * †Pustula subhorrida – or unidentified related form
 * †Pustula tuberculata – or unidentified related form
 * †Pustula wallaciana – or unidentified related form
 * †Pustula wallacianus – or unidentified related form
 * †Pycnactis – tentative report
 * †Pycnolithus – tentative report
 * †Pylentonema
 * †Pylentonema antiqua – or unidentified comparable form

Q

 * †Quadricarina
 * †Quadricarina noklebergi – type locality for species
 * †Quasifusulina
 * †Quasifusulina longissima – or unidentified related form
 * †Quebecaspis
 * †Quebecaspis aspinosa – type locality for species
 * †Quebecaspis conifrons – tentative report

R

 * †Rachiopteris
 * †Raphistoma – tentative report
 * †Raphistoma alaskensis – type locality for species
 * †Raphistomina
 * †Raphistomina rugata – or unidentified comparable form
 * †Rastrites
 * †Rastrites longispinus – or unidentified comparable form
 * †Rastrites peregrinus – or unidentified related form
 * KimmswickOzoraMidOrdReceptaculitid.jpg †[[Receptaculites]]
 * †Rectograptus
 * †Rectograptus amplexicaulis
 * †Remipyga
 * †Renalcis
 * †Renalcis tuberculatus – or unidentified comparable form
 * †Reteograptus
 * †Reteograptus geinitzianus
 * †Reticularia
 * †Reticularia setigera – or unidentified related form
 * †Reticulariopsis
 * †Reticulariopsis bicollina
 * †Retiolites
 * †Retiolites geinitzianus
 * †Retispira
 * †Retispira sullivani
 * †Reuschia
 * †Rhabdomeson
 * †Rhabdostropha
 * †Rhabdostropha primitiva
 * †Rhaphidophyllum
 * †Rhenozyga
 * †Rhenozyga reifenstuhli – type locality for species
 * †Rhineoderma – tentative report
 * †Rhineoderma wortheni – or unidentified related form
 * †Rhipidomella
 * †Rhipidomella carbonaria – or unidentified related form
 * †Rhipidomella nevadensis – or unidentified related form
 * †Rhipidomella uralica – or unidentified related form
 * †Rhizophyllum
 * †Rhizophyllum schischkaticum
 * †Rhombopora
 * Rhynchonellidae - Rhynchonella species.JPG †[[Rhynchonella]]
 * †Rhynchonella amalthea – or unidentified comparable form
 * †Rhynchonella livonica
 * †Rhynchopora
 * †Rhynchopora beecheri – or unidentified related form
 * †Rhynchopora geinitziana – or unidentified related form
 * †Rhynchopora kochi – or unidentified comparable form
 * †Rhynchopora nikitini – or unidentified related form
 * †Rhytiodentalium
 * †Rhytiodentalium kentuckyensis – or unidentified comparable form
 * †Richardsonella
 * †Richthofenia
 * †Richthofenia lawrenciana – or unidentified related form
 * †Rigbyetia
 * †Rigbyetia obconica
 * †Roadoceras
 * †Roadoceras roadense – or unidentified comparable form
 * †Roemeria – or unidentified comparable form
 * †Rothpletzella
 * †Rothpletzella gotlandica
 * †Rousseauspira
 * †Rousseauspira teicherti
 * †Rugaltarostrum
 * †Rugaltarostrum congregabile – type locality for species
 * †Rugatia
 * †Rugatia occidentalis – or unidentified related form
 * †Rugivestis
 * †Rugivestis girtyi – type locality for species
 * †Rugosatrypa
 * †Rugosatrypa flexibilis

S

 * †Saffordophyllum
 * †Salairophyllum
 * †Sanguinolites
 * †Sannemannia
 * †Sannemannia glenisteri – or unidentified related form
 * †Sarcinula
 * †Savagerhynchus – type locality for genus
 * †Savagerhynchus hecetaensis – type locality for species
 * †Scalites
 * †Scalites tellerensis – type locality for species
 * †Scaphina – tentative report
 * †Scaphorthis
 * †Scaphorthis virginiensis
 * †Scharfenbergia
 * †Scharfenbergia concentrica
 * †Scharfenbergia impella
 * †Scharfenbergia ruestae
 * †Scharfenbergia tailleurense
 * †Scharyia
 * †Schizodus
 * †Schizophoria
 * †Schizophoria fragilis – or unidentified comparable form
 * †Schizophoria macfarlani
 * †Schizophoria striatula
 * †Schizophoria swallowi – or unidentified related form
 * †Schizoproetoides – tentative report
 * †Schmidtella
 * †Schrenkiella
 * †Schrenkiella schrenki – or unidentified comparable form
 * †Schuchertella
 * †Schwagerina
 * †Schwagerina jenkinsi – or unidentified comparable form
 * †Sciophyllum
 * †Sciophyllum alaskaensis
 * †Sciophyllum lambarti
 * †Scotoharpes
 * †Scotoharpes raaschi – or unidentified related form
 * †Semicoccinium – tentative report
 * †Semicyclus
 * †Semicyclus brabbi
 * †Semisphaerocephalus
 * †Semisphaerocephalus latus – type locality for species
 * †Septabrunsiina
 * †Septacamera
 * †Septacamera kutorgae
 * †Septacamera opitula – tentative report
 * †Septacamera pybensis – type locality for species
 * †Septacamera stupenda – type locality for species
 * †Septaglomospiranella
 * †Septimyalina
 * †Septimyalina perattenuata – or unidentified related form
 * †Septopora – tentative report
 * †Serpulospira
 * †Shumardella
 * †Shumardella missouriensis
 * †Sibirirhynchia
 * †Sibirirhynchia alata
 * †Sibiritia
 * †Sibiritoechia – tentative report
 * †Sibiritoechia sylvia
 * †Sieberella
 * †Sigmocheilus – tentative report
 * †Sigmocheilus compressus – type locality for species
 * †Sinutropis
 * †Sinutropis esthetica – type locality for species
 * †Sinutropis spiralis – type locality for species
 * †Siphonophrentis – tentative report
 * †Siskiyouspira
 * †Skenidioides
 * †Skenidioides multifarius
 * †Smithiphyllum
 * †Sociophyllum
 * †Sociophyllum glomerulatum – or unidentified comparable form
 * †Solenopleura
 * Solenoporaceae - Solenopora cropped.jpg †[[Solenopora]]
 * †Solenopora compacta
 * †Solenopora filiformis
 * †Solenopsis – tentative report
 * †Sowerbina
 * †Sowerbina timanica – or unidentified comparable form
 * †Sowerbyella
 * †Sowerbyella praecursor – type locality for species
 * †Sowerbyella rectangularis – type locality for species
 * †Spathognathodus
 * †Spathognathodus inclinatus
 * †Spencella
 * †Spencella acanthina
 * †Spencella montanensis
 * †Sphaerina
 * †Sphaerina congregata
 * Cyanobacteria - Sphaerocodium kokeni cropped.jpg †[[Sphaerocodium]]
 * †Sphaerodoma
 * †Sphenosteges
 * †Sphenosteges hispidus – or unidentified related form
 * †Spinatrypa
 * †Spinatrypa spinosa
 * †Spinatrypa trulla – or unidentified comparable form
 * †Spinicharybdis
 * †Spinicharybdis boucoti – type locality for species
 * †Spinicharybdis krizi – type locality for species
 * †Spinulrichospira – type locality for genus
 * †Spinulrichospira cheeneetnukensis – type locality for species
 * †Spinulrichospira churkini – type locality for species
 * Spirifer perlamosus pedunculate valve.jpg †[[Spirifer]]
 * †Spirifer allatus – or unidentified related form
 * †Spirifer anossofi
 * †Spirifer bifurcatus – or unidentified related form
 * †Spirifer bisulcatus – or unidentified related form
 * †Spirifer cheiropteryx – or unidentified comparable form
 * †Spirifer disjunctus
 * †Spirifer duplicicostatus
 * †Spirifer hians
 * †Spirifer incertus – or unidentified related form
 * †Spirifer indeferens
 * †Spirifer keokuk – or unidentified related form
 * †Spirifer missouriensis – or unidentified related form
 * †Spirifer mosquensis – or unidentified related form
 * †Spirifer pellensis – or unidentified related form
 * †Spirifer schellwieni – or unidentified related form
 * †Spirifer subcomprimatus
 * †Spirifer thetides – or unidentified comparable form
 * †Spirifer thetidis
 * †Spiriferella
 * †Spiriferella arctica
 * †Spiriferella artica
 * †Spiriferella interplicata – or unidentified related form
 * †Spiriferella keilhavii
 * †Spiriferella pseudotibetana
 * †Spiriferellina
 * †Spiriferellina cristata – or unidentified related form
 * †Spiriferina
 * †Spiriferina holtzapfeli – or unidentified related form
 * †Spiriferina panderi – or unidentified related form
 * †Spiriferinaella
 * †Spiriferinaella artiensis – or unidentified related form
 * †Spiriferinaella tastubensis – or unidentified related form
 * Spirorbis spirorbis Scotland.jpg [[Spirorbis]]
 * †Spongophyllum
 * †Spyroceras
 * †Squamularia
 * †Stauria
 * †Stegocoelia – tentative report
 * †Stelliporella
 * †Stenoloron
 * †Stenoloron swallovana – or unidentified related form
 * †Stenopora
 * †Stenorhynchia
 * †Stenoscisma
 * †Stenoscisma bisinuata – or unidentified related form
 * †Stenoscisma crumena – or unidentified related form
 * †Stenoscisma margaritovi
 * †Stenoscisma mutabilis – or unidentified related form
 * †Stenoscisma purdoni – or unidentified related form
 * †Stenoscisma spitzbergiana
 * †Stictopora
 * †Stigmosphaerostylus
 * †Stigmosphaerostylus itsukaichiensis
 * †Stipespongia – type locality for genus
 * †Stipespongia laminata – type locality for species
 * †Straparollina
 * †Straparollina circe
 * †Straparollina eurydice – or unidentified comparable form
 * †Straparollus
 * †Straparollus spergenensis – or unidentified related form
 * †Streblopteria
 * †Streblopteria montpelierensis – or unidentified related form
 * †Streblotrypa – tentative report
 * †Streptacis
 * †Streptacis subgracilis – or unidentified related form
 * †Streptorhynchus
 * †Streptorhynchus pelargonatum – or unidentified related form
 * †Streptorhynchus pelargonatus – or unidentified related form
 * †Streptotrochus
 * †Streptotrochus amicus – or unidentified comparable form
 * †Striatifera
 * †Striatifera ischmensis – or unidentified related form
 * †Striatopora
 * †Striatostyliolina
 * †Stringocephalus
 * †Stringocephalus burtini
 * †Stringophyllum
 * †Strobeus
 * †Stromatopora
 * †Strophalosia – tentative report
 * Strophomena costellata brachial.jpg †[[Strophomena]]
 * †Strophomena comitans
 * †Strophomena fugax – or unidentified comparable form
 * †Strophomena planobesa
 * †Strophomena stephani
 * †Strophonella
 * †Strophostylus
 * †Styliolina
 * †Styliolina fissurella
 * †Subanarcestes – tentative report
 * †Sumatrina – tentative report
 * †Svalbardia
 * †Svalbardia toulai
 * †Sycidium
 * Syringoporid.jpg †[[Syringopora]]
 * †Syringopora formosa – type locality for species
 * †Syringopora obesa
 * †Syringopora rockfordensis
 * †Syringopora schulzei
 * †Syringoporella
 * †Syringoporella rara – type locality for species
 * †Syringoporinus
 * †Syringothyris

T

 * †Tabularia
 * †Tabulophyllum
 * Taeniocrada cropped.jpg †[[Taeniocrada]]
 * †Taimyrophyllum
 * †Taimyrrhynx
 * †Taimyrrhynx taimyrico
 * †Taphrorthis
 * †Taphrorthis immatura
 * †Tchaiaspis
 * †Tcherskidium
 * †Tcherskidium unicum
 * †Teganium
 * †Teguliferina – tentative report
 * †Teichertina
 * †Telinopsis
 * Tentaculitid041011.jpg †[[Tentaculites]]
 * †Tenticospirifer
 * †Tenticospirifer wadleighensis
 * †Terrakea – tentative report
 * †Tersella
 * †Tersella sainsburyi – type locality for species
 * †Tetradium
 * †Tetragraptus
 * †Tetragraptus quadribrachiatus – or unidentified comparable form
 * †Tetraprioniodus – tentative report
 * †Thamniscus – tentative report
 * †Thamnophyllum
 * †Thamnopora
 * †Thamnosia
 * †Thamnosia arctica
 * †Thecostegites
 * †Theodossia
 * †Theodossia albertoensis
 * †Tholifrons – type locality for genus
 * †Tholifrons adevna – type locality for species
 * †Tholifrons minutus – type locality for species
 * †Thysanophyllum
 * †Thysanophyllum astraeiforme
 * †Thysanophyllum orientale
 * †Tiramnia
 * †Tiramnia greenlandica
 * †Tityrophora – tentative report
 * †Tollina
 * †Tortodus
 * †Tortodus kockelianus
 * †Tortodus kockeliensis
 * †Torynifer
 * †Torynifer pseudolineatus – or unidentified related form
 * †Tostonia
 * †Trabeculites
 * †Transridgeia – type locality for genus
 * †Transridgeia costata – type locality for species
 * †Trapezophyllum
 * †Tremanotus
 * †Trepospira – tentative report
 * †Triaenosphaera
 * †Triaenosphaera hebes
 * Triarthrus becki.jpg †[[Triarthrus]]
 * †Trigonirhynchia
 * †Trigonirhynchia ventricosa – or unidentified related form
 * †Triplophyllum
 * †Triticites
 * †Trochomphalus
 * †Trochomphalus dimidiatus
 * †Trochonema
 * †Trochonema retrorsum – or unidentified related form
 * †Trochonema wartheni
 * †Trochonemella
 * †Trochonemella churkini – type locality for species
 * †Trochonemella reusingi – type locality for species
 * †Tropidodiscus
 * †Tryplasma
 * †Tscherkidium
 * †Tuberculatella
 * †Tuberculatella tuberculata – or unidentified related form
 * †Tubina
 * †Turbonellina
 * †Turbonellina chatzepovkensis – or unidentified related form
 * †Turbospongia – type locality for genus
 * †Turbospongia biperforata – type locality for species
 * †Turrilepas
 * †Turrilepas type locality for species A – informal
 * †Tuxekanella
 * †Tuxekanella simplex

U

 * †Ulungaratoconcha – type locality for genus
 * †Ulungaratoconcha heidelbergeri – type locality for species
 * †Uncinulus – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Uncinulus polaris
 * †Undatrypa
 * †Uniconus
 * †Uniconus livnensis
 * †Uniconus orbiculus
 * †Uraloceras
 * †Uraloceras burtiense
 * †Uraloceras fedorowi
 * †Uraloceras involutum
 * †Uraloceras nevadense

V

 * †Verbeekina
 * †Verneuilia
 * †Verneuilia langenstrasseni – type locality for species
 * †Virgulaspongia – type locality for genus
 * †Virgulaspongia uniforma – type locality for species
 * †Viriatellina – or unidentified comparable form
 * †Viriatellina gemuendina

W

 * †Waagenites
 * †Waagenites trapezoidalis – or unidentified related form
 * †Waagenoconcha
 * †Waagenoconcha humboldti
 * †Waagenoconcha irginae – or unidentified comparable form
 * †Waagenoconcha irginaeformis – or unidentified comparable form
 * †Waagenoconcha payeri
 * †Waagenoconcha tastubensis
 * †Warrenella
 * †Wedekindellina
 * †Wedekindellina uralica
 * †Westbroekina
 * †Westbroekina chacoensis
 * †Westergaardodina
 * †Whidbornella
 * †Whidbornella lachrymosa – or unidentified comparable form
 * †Whitfieldella
 * †Wilberrya
 * †Winterbergiella
 * †Winterbergiella binodosa – or unidentified related form
 * Wodnika striatula.jpg †[[Wodnika]]
 * †Wodnika borealis

X

 * †Xenambonites
 * †Xenambonites revelatus
 * †Xystriphyllum
 * †Xystriphyllum devonicum
 * †Xystriphyllum gorskii
 * †Xystriphyllum schluteri

Y

 * †Yabeina
 * †Yacutipora
 * †Yakovlevia
 * †Yakovlevia greenlandica – or unidentified comparable form
 * †Yakovlevia mammata
 * †Yakovlevia multistriata – or unidentified related form

Z

 * †Zacanthoides
 * †Zamiopteris
 * †Zaphrenthis
 * †Zaphrenthis gigantea
 * †Zelophyllum
 * †Zonophyllum
 * †Zygopleura