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 541 and 252.17 million years of age.

A

• †Abadehella
• †Acanthocladia
• †Acanthopecten
  • †Acanthopecten carbonifer – or unidentified related form
  • †Acanthopecten delawarensis – or unidentified related form
• †Acanthophyllum

• 

  Fossil of the Silurian-Middle Devonian trilobite Acanthopyge

  †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

• 

  Fossilized shell of the Middle Devonian ammonoid cephalopod, Agoniatites

  †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

• 

  Fossilized shell of the Late Ordovician-Carboniferous brachiopod Atrypa

  †Atrypa
  • †Atrypa hystrix
  • †Atrypa reticularis
• †Atrypella
  • †Atrypella borealis
  • †Atrypella scheii
  • †Atrypella tenuis
• †Atrypoidea
  • †Atrypoidea scheii
• †Attenuatella
• †Aulocystis
• †Aulopora
• †Australonema
• †Australophyllum

• 

  Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten

  †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

• 

  Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon

  †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

  • 

    Fossil of the Silurian trilobite Calymene blumenbachii

    †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

• 

  Fossil of the Ordovician-Silurian tabulate coral Catenipora

  †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

• 

  Fossil of the Cambrian-Middle Devonian trilobite Cheirurus

  †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

• 

  Fossil of the Carboniferous tabulate coral Cladochonus

  †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

• 

  Assemblage of fossils of the Cambrian graptolite Climacograptus

  †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

• 

  Fossilized shell of the Late Devonian-Permian brachiopod Composita

  †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

• 

  Fossilized shell of the Late Cretaceous brachiopod Crania

  †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

• 

  Fossilized foliage from the Carboniferous seed fern Cyclopteris

  †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

• 

  Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras

  †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

• 

  Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites

  †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

• 

  Shell of a Dentalium tusk shell

  †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

• 

  Fossil of the Middle Ordovician graptolite Didymograptus

  †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

• 

  Cambrian graptolite Diplograptus

  †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

• 

  Fossilized foliage from the Early-Late Devonian club moss relative Drepanophycus

  †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

• 

  Fossils at different stages of development of the Cambrian trilobite Elrathia

  †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

• 

  Fossilized shell of the Silurian-Permian sea snail Euomphalus

  †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

• 

  Fossil of the Late Ordovician-Permian tabulate coral Favosites

  †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

• 

  Assemblage of fossils of Silurian-Permian fusulinid foraminiferans

  †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

• 

  Fossil of the Early-Late Ordovician trilobite Geragnostus

  †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

• 

  Multiple views of a fossil of the Ordovician horn coral Grewingkia

  †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

• 

  Fossil of the Devonian trilobite Harpides

  †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

• 

  Fossil of the Cambrian trilobite Hemirhodon

  †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

• 

  Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras

  †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

• 

  Fossil of the Cambrian trilobite Kootenia

  †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

  • 

    Illustration of a fossil of the Cambrian trilobite Lejopyge laevigata

    †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

• 

  Fossilized shell of the Devonian-modern marine bivalve Lucina

  †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

• 

  Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella

  †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

• 

  Fossils of the Early Devonian graptolite Monograptus

  †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

• 

  Fossilized shell of the Devonian brachiopod Mucrospirifer

  †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

• 

  Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis

  †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

• 

  Fossilized shell of the Carboniferous-Permian brachiopod Neospirifer

  †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

• 

  Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula

  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

• 

  Fossil of the Cambrian trilobite Pagetia

  †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

• 

  Fossil of the Cambrian trilobite Paradoxides

  †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

• 

  Fossils of the Late Devonian-Permian fern-like fronds Pecopteris

  †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

• 

  Fossilized shell of the Silurian-Middle Devonian brachiopod Pentamerus

  †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

• 

  Fossil of the Cambrian trilobite Phalagnostus

  †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

• 

  Fossil of the Early Ordovician graptolite Phyllograptus

  †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

• 

  Fossilized shell of the Silurian-Early Triassic sea snail Platyceras

  †Platyceras
• †Platycrinites
  • †Platycrinites nikondaense – type locality for species
• †Platycrinus
• †Platyschisma – tentative report
• Pleurotomaria
• †Plicogypa
  • †Plicogypa kayseri – or unidentified comparable form

• 

  Various conodont elements, including those of Polygnathus (specimens 8, 10, and 11)

  †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

• 

  Restoration of the Silurian trilobite Proetus

  †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

• 

  Fossil of the Silurian-Devonian horn coral Pseudoamplexus

  †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

• 

  Fossilized shell of a Pseudomelania sea snail

  †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

• 

  Fossil of the primitive Devonian vascular plant Psilophyton

  †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

• 

  Fossil of the Early Ordovician-Permian benthic alga Receptaculites

  †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

• 

  Fossilized shell of the Silurian-Eocene articulate brachiopod Rhynchonella

  †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

• 

  Fossils of the red alga Solenopora

  †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

• 

  Assemblage of fossils of the Ordovician-Triassic blue-green alga Sphaerocodium

  †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

• 

  Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer

  †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

• 

  Modern shells of the polychaete worm Spirorbis

  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

• 

  Fossilized shell of the Ordovician-Silurian brachiopod Strophomena

  †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

• 

  Fossil of the Devonian tabulate coral Syringopora

  †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

• 

  Fossils of the Devonian plant stem morphogenus Taeniocrada

  †Taeniocrada
• †Taimyrophyllum
• †Taimyrrhynx
  • †Taimyrrhynx taimyrico
• †Taphrorthis
  • †Taphrorthis immatura
• †Tchaiaspis
• †Tcherskidium
  • †Tcherskidium unicum
• †Teganium
• †Teguliferina – tentative report
• †Teichertina
• †Telinopsis

• 

  Fossilized shell of the Early Ordovician-Late Devonian probable mollusc Tentaculites

  †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

• 

  Restoration showing the top (left) and underside of the Late Ordovician trilobite Triarthrus

  †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

• 

  Restoration of the Permian shark Wodnika

  †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

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017. {{cite web}}: |author= has generic name (help)