List of the Paleozoic life of Wyoming

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

A

• †Acanthopecten
  • †Acanthopecten alatus
  • †Acanthopecten coloradoensis
  • †Acanthopecten delawarensis – or unidentified comparable form
• †Acanthoscorpio – type locality for genus
  • †Acanthoscorpio mucronatus – type locality for species
• †Acanthracospirifer
  • †Acanthracospirifer occiduus – tentative report
  • †Acanthracospirifer shawi
• †Acondylacanthus
  • †Acondylacanthus browni – type locality for species
• †Acontiodus
• †Acratia – tentative report
  • †Acratia disjuncta
• †Actinoceras
• †Actinocoelia
  • †Actinocoelia maeandrina
• †Acuticarpus
  • †Acuticarpus delticus
  • †Acuticarpus republicensis – type locality for species
• †Adetognathodus
  • †Adetognathodus gigantea – or unidentified comparable form
• †Agassizodus
  • †Agassizodus variabilis
• †Agnostogonus
  • †Agnostogonus incognitus – or unidentified comparable form
• †Allocryptaspis
  • †Allocryptaspis ellipticus
  • †Allocryptaspis flabelliformis
• †Allumettoceras
• †Alokistocare
• †Amphiscapha
  • †Amphiscapha calix – type locality for species
• †Amphissites
  • †Amphissites robertsi
• †Amplexus
• †Ananias
  • †Ananias nevadensis – or unidentified related form
• †Anarthraspis
  • †Anarthraspis chamberlini
  • †Anarthraspis montanus
• †Ancistriodus
  • †Ancistriodus multisectus
• †Anematina
• †Angulotreta
• †Anidanthus
• †Ankoura
• †Anthracospirifer
  • †Anthracospirifer curvilateralis
  • †Anthracospirifer occidus
  • †Anthracospirifer occiduus
  • †Anthracospirifer rawlinsensis
  • †Anthracospirifer shawi
  • †Anthracospirifer welleri
• †Antiquatonia
  • †Antiquatonia coloradoensis – or unidentified comparable form
  • †Antiquatonia sulcatus – or unidentified comparable form
• †Antracospirifer
  • †Antracospirifer occidus
  • †Antracospirifer rawlinsensis
  • †Antracospirifer shawi
  • †Antracospirifer welleri
• †Apachella
  • †Apachella boydi – type locality for species
  • †Apachella capertoni
  • †Apachella franciscana
  • †Apachella pseudostrigillata
  • †Apachella turbiniformis
• †Aphanaia
  • †Aphanaia erectum – type locality for species
• †Aphelaspis
  • †Aphelaspis walcotti
• †Apiculatisporites
  • †Apiculatisporites microconus
• †Apiculiretusispora
  • †Apiculiretusispora plicata
  • †Apiculiretusispora spicula
• †Arapahoia
• †Archaediscus
  • †Archaediscus krestovnikovi – or unidentified loosely related form
• †Archaeocidaris
• †Arctacanthus
  • †Arctacanthus wyomingensis – type locality for species
• †Asphaltina
• †Astartella
  • †Astartella aueri – type locality for species
  • †Astartella concentrica
• †Asteroarchaediscus
  • †Asteroarchaediscus bachkiricus

• 

  Life restoration of the Middle-Late Ordovician jawless fish Astraspis

  †Astraspis
  • †Astraspis desiderata
• †Aviculopecten
  • †Aviculopecten basilicus – or unidentified comparable form
  • †Aviculopecten girtyi
  • †Aviculopecten gravidus
  • †Aviculopecten gryphus
  • †Aviculopecten kaibabensis – or unidentified comparable form
• †Aviculopinna

B

• †Babylonites
• Bairdia
  • †Bairdia contracta
  • †Bairdia delicata
  • †Bairdia nasuta
• †Bakevellia – tentative report
• †Balantoides
  • †Balantoides quadrilobatus
• †Baltagnostus
  • †Baltagnostus wyomingensis – type locality for species
• †Barytichisma
  • †Barytichisma amsdenense
• †Batacanthus
  • †Batacanthus gigas – type locality for species
• †Bathymyonia
  • †Bathymyonia nevadensis
• †Batostoma
• †Bayfieldia
  • †Bayfieldia bindosa
  • †Bayfieldia simata – or unidentified comparable form
• †Baylea
  • †Baylea delawarensis

• 

  Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon

  †Bellerophon
  • †Bellerophon deflectus – or unidentified comparable form
• †Belodus
• †Bighornia
  • †Bighornia parva
  • †Bighornia patella
• †Billingsella
  • †Billingsella perfecta
• †Biseriella
  • †Biseriella moderata
  • †Biseriella parva
• †Blountia
  • †Blountia cora
  • †Blountia janei
• †Blountiella
  • †Blountiella alberta
• †Bolaspidella
• †Borestus
• †Bowmania
  • †Bowmania pennsylvania
• †Brachythyrina
  • †Brachythyrina washakiensis
• †Bradyina – tentative report
• †Branchioscorpio – type locality for genus
  • †Branchioscorpio richardsoni – type locality for species
• †Briscoia
• †Broeggeria – tentative report
  • †Broeggeria strobiliformis
• †Broggeria – tentative report
  • †Broggeria strobiliformis – type locality for species
• †Bryantodina
• †Bryantolepis
  • †Bryantolepis brachycephalus
  • †Bryantolepis cristatus
  • †Bryantolepis major
  • †Bryantolepis obscurus
• †Bucheria – type locality for genus
  • †Bucheria ovata – type locality for species
• †Bulbocanthus
  • †Bulbocanthus rugosus

• 

  Restorative portrait of the Permian synapsid (mammal prescursor) Burnetia

  †Burnetia
  • †Burnetia alta – or unidentified comparable form
• †Bynumia

C

• †Calapoecia
  • †Calapoecia coxi
• †Calcisphaera
  • †Calcisphaera laevis
  • †Calcisphaera pachysphaerica
• †Camaraspis
  • †Camaraspis convexa

• 

  Life restoration of the Carboniferous Chimaera relative

  †Campodus
• †Camptonectes – tentative report
• †Cancrinella
  • †Cancrinella phosphatica
• †Caneyella
• †Caninia
  • †Caninia nevadensis
• †Cardipeltis
  • †Cardipeltis bryanti
  • †Cardipeltis richardsoni
  • †Cardipeltis wallacii
• †Carlinia
  • †Carlinia amsdeniana
• †Cassianoides
  • †Cassianoides sexcostatus – type locality for species

• 

  Fossil of the Ordovician-Silurian tabulate coral Catenipora

  †Catenipora
  • †Catenipora robusta
• †Cavellina
  • †Cavellina bransoni
• †Cavusgnathus
  • †Cavusgnathus unicornis
• †Cedaria
• †Cedarina
• †Celtoides – type locality for genus
  • †Celtoides unioniformis – type locality for species

• 

  Life restoration of the Early Devonian jawless fish Cephalaspis

  †Cephalaspis
  • †Cephalaspis wyomingense
• †Ceraunocochlis
• †Chaetetes
  • †Chaetetes eximius – or unidentified comparable form
  • †Chaetetes wyomingensis
• †Charactoceras – tentative report
• †Cheilocephalus
  • †Cheilocephalus delandi
• †Chirognathus
  • †Chirognathus alternata
  • †Chirognathus curvidens
  • †Chirognathus delicatulus
  • †Chirognathus monodactyla
  • †Chirognathus multidens
  • †Chirognathus reversa
  • †Chirognathus tenuidentatus
  • †Chirognathus unguliformis
• †Chonetes
• †Cibecuia
  • †Cibecuia gouldii – or unidentified comparable form
• †Cinclidonema
  • †Cinclidonema clausepeakensis – type locality for species

• 

  Fossilized shell of the Middle Devonian-Permian brachiopod Cleiothyridina

  †Cleiothyridina
  • †Cleiothyridina atrypoides
  • †Cleiothyridina elegans – or unidentified related form
  • †Cleiothyridina hirsuta
  • †Cleiothyridina sublamellosa – or unidentified related form
• †Clelandia
  • †Clelandia typicalis
• †Cliffa
  • †Cliffa lataegenae
• †Cliffia
  • †Cliffia lataegenae
• †Climacammina
• †Coelogasteroceras
  • †Coelogasteroceras mexicanum
  • †Coelogasteroceras thomasi – type locality for species
• †Coleodus
  • †Coleodus simplex
• †Colpites

• 

  Fossilized shell of the Late Devonian-Permian brachiopod Composita

  †Composita
  • †Composita elongata
  • †Composita laevis – or unidentified related form
  • †Composita mira
  • †Composita ovata
  • †Composita poposiensis
  • †Composita sigma
  • †Composita subquadrata
  • †Composita subtilita
  • †Composita sulcata
• †Conocardium
• †Coosella
• †Coosia
  • †Coosia alethes
• †Coosina
  • †Coosina ariston
• †Cordylodus
  • †Cordylodus concinnus – tentative report
• Cornuspira
• †Crassidonta
  • †Crassidonta stuckenbergi
• †Crepicephalus
  • †Crepicephalus auratus
  • †Crepicephalus buttsimontanaensis
  • †Crepicephalus rectus
• †Crurithyris
  • †Crurithyris arcuata
  • †Crurithyris arcuatus

• 

  Fossil of the Carboniferous shark Ctenacanthus

  †Ctenacanthus
  • †Ctenacanthus amblyxiphias
  • †Ctenacanthus mutabilis – type locality for species
  • †Ctenacanthus obscuracostatus – type locality for species
• †Ctenalosia
  • †Ctenalosia transversa – type locality for species
• †Cuffeyella
  • †Cuffeyella arachnoidea
• †Cupulocrinus
  • †Cupulocrinus latibrachiatus – or unidentified comparable form
• †Cyclites
  • †Cyclites depressus – or unidentified comparable form
• †Cyclospira – tentative report
  • †Cyclospira anticostiana
• †Cymbosporites
  • †Cymbosporites proteus
  • †Cymbosporites senex
• †Cypricardella – tentative report
• †Cyrtogomphoceras
• †Cyrtoniodus
  • †Cyrtoniodus complicatus
  • †Cyrtoniodus erectus
• †Cyrtorostra
  • †Cyrtorostra varicostata – type locality for species
• Cytherella – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Cytherella benniei
• †Cytogomphoceras

D

• †Deckera
  • †Deckera completa – or unidentified comparable form
• †Delaria
  • †Delaria sevilloidia – type locality for species
• †Della
  • †Della suada
• †Deltodus
  • †Deltodus mercurei
• †Dendrocrinus
• †Densonella

• 

  Shell of a Dentalium tusk shell

  †Dentalium
• †Derbyia
  • †Derbyia magna
  • †Derbyia robusta – or unidentified comparable form
• †Diaphragmus
  • †Diaphragmus nivosus
• †Dibolisporites
  • †Dibolisporites abitibiensis
  • †Dibolisporites eifeliensis
  • †Dibolisporites wetteldorfensis
• †Dicellomus
  • †Dicellomus amblia
• †Diceromyonia
  • †Diceromyonia storeya
• †Dictyonina
• †Dictyotomaria
  • †Dictyotomaria carlbransoni – type locality for species
• †Dielasma
  • †Dielasma fabiforme – type locality for species
• †Diestoceras
• †Dimorphosiphon
  • †Dimorphosiphon talbotorum
• †Dinorthis
  • †Dinorthis occidentalis
• †Diplosphaerina
• †Distichophytum
  • †Distichophytum ovatum
• †Dokimocephalus
• †Donaldina
  • †Donaldina pygmaea – or unidentified related form
• †Donaldospira
  • †Donaldospira geminocarinata
• †Drepanodos

• 

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

  †Drepanophycus
  • †Drepanophycus devonicus
• †Duncanopora
  • †Duncanopora duncanae
• †Dysoristus
  • †Dysoristus lochmanae

E

• †Earlandia
  • †Earlandia clavatula
  • †Earlandia elegans
• †Echinauris
  • †Echinauris magna
• †Echinoconchus
• †Ectenocrinus
• †Ectodemites
  • †Ectodemites warei
• †Edmondia
  • †Edmondia gibbosa
  • †Edmondia phosphatica
  • †Edmondia phosphoriensis – or unidentified comparable form
  • †Edmondia stuchburia
• †Eirlysia
  • †Eirlysia reticulata – or unidentified comparable form
• †Elvinia
  • †Elvinia roemeri
• †Emphanisporites
  • †Emphanisporites micrornatus
  • †Emphanisporites rotatus

• 

  Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras

  †Endoceras
• †Endothyra
  • †Endothyra bowmani – or unidentified loosely related form
  • †Endothyra excellens
  • †Endothyra prisca – or unidentified loosely related form
  • †Endothyra similis – or unidentified loosely related form
• †Endothyranella
• †Eoastarte – type locality for genus
  • †Eoastarte subcircularis – type locality for species
• †Eocamptonectes
  • †Eocamptonectes sculptilis
• †Eochonetes
  • †Eochonetes maearum – type locality for species
• †Eoorthis
  • †Eoorthis remnicha
• †Eoschubertella
• †Eostaffella
  • †Eostaffella acutissima – or unidentified loosely related form
  • †Eostaffella circuli
  • †Eostaffella pseudostruvei – or unidentified loosely related form
• †Eostaffellina
  • †Eostaffellina paraprotvae
• †Eotuberitina
• †Ephippiorthoceras
• †Eriptychius
  • †Eriptychius americanus
• †Erismodus
  • †Erismodus abbreviatus
  • †Erismodus typus
• †Eumetria
  • †Eumetria sulcata
• †Eunemacanthus
  • †Eunemacanthus keytei

• 

  Fossilized shell of the Silurian-Permian sea snail Euomphalus

  †Euomphalus
  • †Euomphalus plummeri – or unidentified related form
• †Euphemites
  • †Euphemites crenulatus
  • †Euphemites fremontensis – type locality for species
  • †Euphemites luxuriosus
  • †Euphemites sacajawensis
  • †Euphemites sparciliratus
• †Euphemitopsis
  • †Euphemitopsis multinodosa
  • †Euphemitopsis subpapillosa
• †Eurekia

F

• 

  Fossil of the Late Ordovician-Permian tabulate coral Favosites

  †Favosites
  • †Favosites prolificus – or unidentified comparable form
• †Flexaria – tentative report
• †Foerstephyllum
• †Fransonia
  • †Fransonia wyomingensis

G

• †Gallatinospongia – type locality for genus
  • †Gallatinospongia conica – type locality for species
• †Gastrioceras – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Gastrioceras williamsi – type locality for species
• †Genevievella

• 

  Fossil of the Early-Late Ordovician trilobite Geragnostus

  †Geragnostus
  • †Geragnostus insoltus
• †Girtyella
  • †Girtyella indianensis – or unidentified comparable form
• †Girtypecten
  • †Girtypecten sublaqueatus
• †Girtyspira
• †Girvanella
• †Glabrocingulum
  • †Glabrocingulum alveozonum
  • †Glabrocingulum coronatum
  • †Glabrocingulum texanum
• †Glaphyraspis
  • †Glaphyraspis occidentalis

• 

  Life restoration of the Carboniferous shark Glikmanius

  †Glikmanius
  • †Glikmanius occidentalis
• †Globivalvulina
  • †Globivalvulina bulloides – or unidentified loosely related form
• †Globoendothyra
• †Glyphaspis
  • †Glyphaspis tetonensis
• †Glyptopleura
  • †Glyptopleura multicostata
• †Gnamptorhynchos
  • †Gnamptorhynchos prayi
• †Goniasma – tentative report

• 

  Fossilized shell of the Late Devonian-Late Triassic ammonoid cephalopod Goniatites

  †Goniatites – tentative report
• †Goniophora – tentative report
• †Gosseletina
  • †Gosseletina idahoensis – type locality for species
  • †Gosseletina permiana
• †Gosslingia
  • †Gosslingia americana
• †Grandispora
  • †Grandispora biornata – tentative report
  • †Grandispora douglastownense
  • †Grandispora macrotuberculata – tentative report
  • †Grandispora micronata
• †Guizhoupecten
  • †Guizhoupecten cheni
  • †Guizhoupecten tubicostata – type locality for species

H

• †Hadragnostus
  • †Hadragnostus modestus
• †Hamatus
  • †Hamatus phosphoriensis
• †Healdia
  • †Healdia ornata
• †Helemacanthus
  • †Helemacanthus incurvus
• †Helicelasma
  • †Helicelasma selectum

• 

  Life restoration of the Permian Chimaera relative Helicoprion

  †Helicoprion
  • †Helicoprion davisii
• †Helodus
  • †Helodus rugosus
  • †Helodus subpolitus – type locality for species
• †Heslerodus
  • †Heslerodus divergens
• †Hesperorthis
  • †Hesperorthis pyramidalis – or unidentified comparable form
• †Heteropecten
  • †Heteropecten vanvleeti – or unidentified comparable form
• †Hibbardella
• †Hiscobeccus
  • †Hiscobeccus gigas
• †Holcacephalus
  • †Holcacephalus tenerus
• †Hollina
  • †Hollina occidentalis
• †Hollinella
  • †Hollinella typica
• †Holophragma – report made of unidentified related form or using admittedly obsolete nomenclature
• †Homagnostus
• †Hormotoma
• †Hostimella
• †Housia
• †Hustedia
  • †Hustedia phosphoriensis
• †Hydroscorpius – type locality for genus
  • †Hydroscorpius denisoni – type locality for species

• 

  Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha

  †Hyolithes
  • †Hyolithes primordialis
• †Hypergonia
  • †Hypergonia percostata
• †Hypseloconus
  • †Hypseloconus simplex
• †Hypsiptycha
  • †Hypsiptycha anticostiense
  • †Hypsiptycha anticostiensis
  • †Hypsiptycha neenah – or unidentified comparable form
• †Hystriculina

I

• †Ianthinopsis
• †Idiognathoides
  • †Idiognathoides corrugata
  • †Idiognathoides sinuata
• †Illaenurus
  • †Illaenurus priscus
• †Incrustatospongia – type locality for genus
  • †Incrustatospongia superficiala – type locality for species
• †Inflatia
  • †Inflatia lovei
• †Ithyektyphus
  • †Ithyektyphus tetonensis

J

• 

  Restoration of the Carboniferous-Permian ray-like cartilaginous fish Janassa (top and left)

  †Janassa
  • †Janassa angularis
  • †Janassa unguicula
  • †Janassa unguiformis
• †Jonesina
  • †Jonesina carbonifera
• †Josina – type locality for genus
  • †Josina festiva – type locality for species
• †Juresania

K

• †Kaibabella
  • †Kaibabella basilica – type locality for species

• 

  Fossil of the Cambrian trilobite Kendallina

  †Kendallina
  • †Kendallina eryon
• †Kingstonia
  • †Kingstonia walcotti
• †Kionoceras
• †Kochoceras
• †Komiella
  • †Komiella ostiolata
• †Kormagnostus
  • †Kormagnostus seclusus
• †Kyphocephalus

L

• †Lambeoceras
• †Lamellospira
  • †Lamellospira alveozona – type locality for species
• †Lampraspis
  • †Lampraspis tuberculata

• 

  Fossils of the Middle Devonian clubmoss Leclercqia

  †Leclercqia
  • †Leclercqia complexa
• †Leiorhynchus
  • †Leiorhynchus weeksi
• †Lepidocyclus
• †Leptochondria
  • †Leptochondria curtocardinalis – type locality for species
• †Leptodesma
• †Levizygopleura
  • †Levizygopleura inornata – or unidentified comparable form
• †Limipecten – tentative report
• †Linglella
  • †Linglella modesta
• †Lingula
  • †Lingula carbonaria

• 

  Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella

  †Lingulella
  • †Lingulella modesta
• †Linnarssonella
  • †Linnarssonella girtyi
  • †Linnarssonella girtyyi
• †Linoproductus
  • †Linoproductus eastoni
  • †Linoproductus planiventralis
• †Liosotella – tentative report
• †Lipinella
• †Liroceras
• †Lobocorallium
  • †Lobocorallium trilobatum
• †Lonchocephalus
• †Lonchodus
• †Lyroschizodus
  • †Lyroschizodus oklahomensis – or unidentified comparable form

M

• †Machaeracanthus
  • †Machaeracanthus minor
• †Maclurina
  • †Maclurina manitobensis
• †Maclurites
• †Macrostylocrinus
  • †Macrostylocrinus wyomingensis – type locality for species
• †Marginifera
  • †Marginifera haydenensis
• †Maryvillia
• †Meekella
  • †Meekella attenuata
• †Meekopinna
  • †Meekopinna sagitta
• †Meekospira
• †Megamyonia
  • †Megamyonia nitens
• †Meniscocoryphe
  • †Meniscocoryphe platycephala
• †Meniscocryphe
  • †Meniscocryphe platycephala
• †Mesolobus

• 

  Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras

  †Metacoceras
  • †Metacoceras knighti – type locality for species
  • †Metacoceras sulciferum – type locality for species
• †Meteoraspis
• †Microcoelodus
  • †Microcoelodus breviconus
  • †Microcoelodus unicornis
• †Microdoma – tentative report
• †Micromitra
  • †Micromitra modesta
• †Millerella
  • †Millerella pressa
  • †Millerella pura – or unidentified related form
• †Miltonella
  • †Miltonella shupei
• †Minicephalus – type locality for genus
  • †Minicephalus primus – type locality for species
• †Modocia
• †Monocheilus
  • †Monocheilus truncatus
• †Mooreoceras – tentative report
• †Mourlonia
• †Multithecopora
  • †Multithecopora amsdenensis
• †Myalina
  • †Myalina aviculoides
  • †Myalina sinuata – type locality for species
  • †Myalina wyomingensis

N

• †Nahannagnostus
  • †Nahannagnostus nganasanicus
• †Nasutimena
  • †Nasutimena fluctuosa

• 

  Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis

  †Naticopsis
  • †Naticopsis judithae
  • †Naticopsis kaibabensis
  • †Naticopsis marthaae – or unidentified comparable form
• †Natiria
  • †Natiria americana
• †Neoarchaediscus
  • †Neoarchaediscus incertus
  • †Neoarchaediscus parvus
• †Neocoleodus
  • †Neocoleodus spicatus
• †Neokoninckophylllum
  • †Neokoninckophylllum inconstans
• †Neokoninckophyllum
  • †Neokoninckophyllum hamatilis

• 

  Fossilized shell of the Carboniferous-Permian brachiopod Neospirifer

  †Neospirifer
  • †Neospirifer bakeri
• †Nixonella
• Nucula – tentative report
• †Nuculopsis
  • †Nuculopsis montpelierensis
  • †Nuculopsis poposiensis – type locality for species
  • †Nuculopsis pulchra
• †Nuferella – tentative report
  • †Nuferella puncta

O

• †Obliquipecten
• †Ocnerorthis
  • †Ocnerorthis cooperi
• †Oepikina
  • †Oepikina pergibbosa – or unidentified comparable form
• †Oistodus
  • †Oistodus curvatus

• 

  Fossil of the Cambrian trilobite Olenoides

  †Olenoides
  • †Olenoides incertus – or unidentified comparable form
• †Onchus
  • †Onchus penetrans
  • †Onchus peracutus
• †Orbiculoidea
  • †Orbiculoidea missouriensis
  • †Orbiculoidea utahensis
  • †Orbiculoidea wyomingensis
• †Oreaspis
  • †Oreaspis ampla
  • †Oreaspis dunklei
  • †Oreaspis williamsi
• †Oriocrassatella
  • †Oriocrassatella elongata – type locality for species
• †Orthonema
• †Orthotetes
  • †Orthotetes kaskaskiensis
• †Orthothetina
  • †Orthothetina amsdenensis
• †Otusia
• †Ovatia
  • †Ovatia croneisi
  • †Ovatia muralis
• †Ozarkodina

P

• †Paladin
  • †Paladin moorei
• †Palaeoneilo
  • †Palaeoneilo mcchesneyana
• †Palaeonubecularia – or unidentified comparable form
• †Palaeophyllum
  • †Palaeophyllum gracile
  • †Palaeophyllum humei
• †Palaeotextularia
  • †Palaeotextularia consobrina – or unidentified loosely related form
  • †Palaeotextularia longiseptata – or unidentified loosely related form
• †Paleocuticularia – type locality for genus
  • †Paleocuticularia perforata – type locality for species
• †Paleofavosites
  • †Paleofavosites prayi
• †Paleyoldia
  • †Paleyoldia amsdenensis
• †Paltodus
• †Parabolinoides
  • †Parabolinoides expansus
• †Paracedaria
• †Paracedarina
• †Paractinoceras
• †Parajuresania
  • †Parajuresania nebrascensis
• †Parallelodon
  • †Parallelodon multistriatus – or unidentified comparable form
• †Paraschizodus – type locality for genus
  • †Paraschizodus elongatus – type locality for species
• †Paraspiriferina
  • †Paraspiriferina formulosa – type locality for species
• †Parehmania
  • †Parehmania inornata
• †Peripetoceras
• †Permophorus
  • †Permophorus albequus
  • †Permophorus pricei – type locality for species
• †Pernopecten
• †Petrocrania
• †Pharkidonotus
  • †Pharkidonotus altitropis – type locality for species
• †Phestia
  • †Phestia perumbonata
• †Pimmacanthus
  • †Pimmacanthus inequistriatus
• †Plaesiomys
  • †Plaesiomys rockymontana – or unidentified related form
• †Plagioglypta
• †Planoendothyra
• †Planospirodiscus
• †Platyceras
  • †Platyceras yochelsoni – type locality for species

• 

  Fossilized shell of the Middle Ordovician-Silurian brachiopod Platystrophia

  †Platystrophia
  • †Platystrophia equiconvexa
• †Plethopletis
  • †Plethopletis arbucklensis
• †Pleurosiphonella
  • †Pleurosiphonella drummondi
• †Polidevcia
  • †Polidevcia bellistriata
  • †Polidevcia obesa
• †Polycaulodus
  • †Polycaulodus bidentatus
• †Posidonia
• †Praearcturus
• †Proagnostus – or unidentified comparable form
• †Procostatoria
  • †Procostatoria sexradiata
• †Prodentalium
  • †Prodentalium canna
• †Protaspis
  • †Protaspis brevispina
  • †Protaspis mcgrewi
  • †Protaspis ovata
  • †Protaspis sculpta
  • †Protaspis transversa
• †Prototreta
• †Pseudagnostus
  • †Pseudagnostus douvillei
  • †Pseudagnostus prolongus – or unidentified comparable form
• †Pseudobythocypris – tentative report
  • †Pseudobythocypris amsdenensis
• †Pseudoendothyra
  • †Pseudoendothyra kremenskensis – or unidentified loosely related form
• †Pseudogastrioceras
• †Pseudoglomospira
• †Pseudomatthevia
  • †Pseudomatthevia conica

• 

  Fossilized shell of a Pseudomelania sea snail

  †Pseudomelania – tentative report
• †Pseudomonotis
  • †Pseudomonotis likharevi
• †Pseudorthoceras
  • †Pseudorthoceras knoxense
• †Pseudovidrioceras
  • †Pseudovidrioceras girtyi
• †Pseudozygopleura
  • †Pseudozygopleura croneisi
  • †Pseudozygopleura girtyi – or unidentified comparable form
• †Psilophyton
  • †Psilophyton wyomingense – type locality for species
• †Pterocephalia
  • †Pterocephalia bridgei
• †Pteroconus
  • †Pteroconus gracilis
• †Pugnoides
  • †Pugnoides quinqeuplecis
  • †Pugnoides quinqueplecis
• †Pulsia
  • †Pulsia delira

R

• †Rawlinsella
• †Renalcis

• 

  Restoration of the Early Devonian primitive vascular plant Renalia

  †Renalia
  • †Renalia dorfii – type locality for species
• †Reticulariina
  • †Reticulariina browni
• †Reticulatia
  • †Reticulatia americana
• †Retispira
  • †Retispira fragilis
  • †Retispira modesta
  • †Retispira tenuilineata – or unidentified loosely related form
  • †Retispira textiliformis
• †Retusotriletes
  • †Retusotriletes actinomorphus
  • †Retusotriletes dubiosus
  • †Retusotriletes simplex
  • †Retusotriletes warringtonii
• †Rhynchotrema
  • †Rhynchotrema iowense
• †Rhynoleichus
  • †Rhynoleichus weeksi
• †Rugomena
  • †Rugomena planocorrugata

S

• †Sallya
  • †Sallya linsa
• †Sanguinolites
• †Sansabella
  • †Sansabella reversa
• †Sargentina – tentative report
  • †Sargentina amsdenensis

• 

  Fossil of the Cambrian-Ordovician trilobite Saukiella

  †Saukiella
  • †Saukiella pyrene
• †Sawdonia
  • †Sawdonia wyomingense – type locality for species
• †Scapallina
  • †Scapallina phosphoriensis
• †Scaphellina
  • †Scaphellina concinna – type locality for species
• †Sceptropora
  • †Sceptropora facula – or unidentified comparable form
• †Schizodus
  • †Schizodus affinis – or unidentified related form
  • †Schizodus alpinus
  • †Schizodus altus – type locality for species
  • †Schizodus bifidus
  • †Schizodus canalis
  • †Schizodus depressus – or unidentified comparable form
  • †Schizodus ferrieri
  • †Schizodus subovatus
  • †Schizodus wheeleri – or unidentified comparable form
  • †Schizodus wyomingensis – type locality for species
• †Schizophoria
  • †Schizophoria depressa
  • †Schizophoria texana – or unidentified comparable form
• †Schuchertella
  • †Schuchertella poposiensis – or unidentified comparable form
• †Scoloconcha
  • †Scoloconcha globosa
• †Sedgewickia – tentative report
• †Semicircularea
  • †Semicircularea arcuata
• †Shansiella
• †Shedhornia – type locality for genus
  • †Shedhornia ornata – type locality for species
• †Shishaella
  • †Shishaella moreyi

• 

  Modern specimen of the marine bivalve Solemya

  Solemya
• †Soleniscus
  • †Soleniscus altonensis – or unidentified related form
  • †Soleniscus primogenius
  • †Soleniscus typicus
• †Solenochilus
  • †Solenochilus brammeri – or unidentified comparable form
• †Sphenalosia – type locality for genus
  • †Sphenalosia smedleyi – type locality for species
• †Sphenosteges
  • †Sphenosteges hispidus
• †Sphondylophyton
  • †Sphondylophyton hyenioides

• 

  Fossilized shell and lophophore of the Silurian-Middle Jurassic brachiopod Spiriferina

  †Spiriferina
  • †Spiriferina kentuckensis – or unidentified comparable form
• †Spyroceras
• †Stacheia
• †Stacheoides
• †Stearoceras
  • †Stearoceras phosphoriense
• †Stegocoelia
• †Stenolobulites
  • †Stenolobulites simulator
• †Stenopilus
  • †Stenopilus glaber
• †Stenopoceras
  • †Stenopoceras abundum – type locality for species
• †Steroconus
  • †Steroconus gracilis
  • †Steroconus plenus
  • †Steroconus robustus
• †Straparollus
• †Streblopteria
  • †Streblopteria montpelierensis
• †Streplopteria
• †Streptelasma
  • †Streptelasma trilobatum
• †Streptognathodus
  • †Streptognathodus parvus
• †Streptognathus
• †Strobeus
  • †Strobeus intercalaris – or unidentified comparable form
  • †Strobeus paludinaeformis – or unidentified comparable form

• 

  Fossilized shell of the Ordovician-Silurian brachiopod Strophomena

  †Strophomena
• †Strophostylus
• †Stutchburia
• †Syspacheilus

T

• †Taenicephalus
  • †Taenicephalus shumardi
• †Tainoceras
  • †Tainoceras wyomingense – type locality for species
• †Talbotina
• †Tapinotomaria – tentative report
• †Tatonkacystis – type locality for genus
  • †Tatonkacystis codyensis – type locality for species
• †Tetrataxis
• †Timaniella
  • †Timaniella pseudocamerata
• †Torynifer
  • †Torynifer setiger
• †Trachelocrinus
  • †Trachelocrinus resseri
• †Tracheolcrinas – tentative report
• †Trachydomia – tentative report
• †Trepeilopsis
• †Triarthropsis
  • †Triarthropsis nitida – or unidentified comparable form

• 

  Fossil of the Cambrian trilobite Tricrepicephalus

  †Tricrepicephalus
  • †Tricrepicephalus coria
• †Triticites
  • †Triticites ventricosus
• †Tuberitina
• †Turbinatocanina
• †Turbinatocaninia – tentative report

U

• †Uncaspis
  • †Uncaspis limbata

• 

  Fossilized jaws of the Late Devonian lungfish Uranolophus

  †Uranolophus
  • †Uranolophus wyomingense

V

• †Virgaspongiella – type locality for genus
  • †Virgaspongiella ramosa – type locality for species
• †Vnigripecten
  • †Vnigripecten phosphaticus – type locality for species
• †Volvotextularia

W

• †Waagenella
  • †Waagenella crassus – or unidentified comparable form
• †Warthia
  • †Warthia fissus
  • †Warthia waageni – or unidentified comparable form
• †Wellerella
  • †Wellerella osagensis – or unidentified comparable form
• †Westonoceras
• †Whitfieldoceras
• †Wilkingia
  • †Wilkingia terminalis
  • †Wilkingia wyomingensis – type locality for species
• †Wilsonoceras
• †Winnipegoceras
• †Worthenia
  • †Worthenia corrugata

X

• †Xestotrema
  • †Xestotrema pulchrum

Y

• †Yakovlevia
  • †Yakovlevia multistriatus
• †Yochelsonellisa
  • †Yochelsonellisa eximia
• †Yunnania – tentative report

Z

• †Zaphrentites – tentative report
• †Zellerina
  • †Zellerina discoidea
• †Zygospira
  • †Zygospira aequivalvis

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.