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
 * Astraspis cropped 2.png †[[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
 * Bellerophon umbilicalis.jpg †[[Bellerophon (genus)|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
 * Burnetia mirabilisDB.jpg †[[Burnetia]]
 * †Burnetia alta – or unidentified comparable form
 * †Bynumia

C

 * †Calapoecia
 * †Calapoecia coxi
 * †Calcisphaera
 * †Calcisphaera laevis
 * †Calcisphaera pachysphaerica
 * †Camaraspis
 * †Camaraspis convexa
 * Campodus sp.jpg †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
 * Museum Mensch und Natur - catenipora.jpg †[[Catenipora]]
 * †Catenipora robusta
 * †Cavellina
 * †Cavellina bransoni
 * †Cavusgnathus
 * †Cavusgnathus unicornis
 * †Cedaria
 * †Cedarina
 * †Celtoides – type locality for genus
 * †Celtoides unioniformis – type locality for species
 * Ostracoderm digital recreation..jpg †[[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
 * Cleiothyridina sublamellosa pedunculate valve.jpg †[[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
 * Compositafossil.jpg †[[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
 * Ctenacanthus major Agassiz.png †[[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
 * Dentalium octangulatum 01.JPG †[[Dentalium (genus)|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
 * Drepanophycus sp.jpg †[[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
 * Endoceras.JPG †[[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
 * Euomphalus fossil cropped.png †[[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

 * FavositesOrdovicianIndiana.jpg †[[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
 * Geragnostus mediterraneus CRF cropped.jpg †[[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
 * Glikmanius1DB.jpg †[[Glikmanius]]
 * †Glikmanius occidentalis
 * †Globivalvulina
 * †Globivalvulina bulloides – or unidentified loosely related form
 * †Globoendothyra
 * †Glyphaspis
 * †Glyphaspis tetonensis
 * †Glyptopleura
 * †Glyptopleura multicostata
 * †Gnamptorhynchos
 * †Gnamptorhynchos prayi
 * †Goniasma – tentative report
 * Goniatitidae - Goniatites species.JPG †[[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
 * Helicoprion bessonovi cropped.png †[[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
 * Hyoliths02.JPG]] †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

 * Janassa bituminosa.jpg †[[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
 * Kendallina sp CRF.jpg †[[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
 * Leclercqia complexa cropped.jpg †[[Leclercqia (plant)|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
 * Lingulella caelata 1.png †[[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
 * Metacoceras discoideum 01.jpg †[[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
 * Neritopsidae - Naticopsis.JPG †[[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
 * Trigonotretidae - Neospirifer ravana.JPG †[[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
 * [[File:Olenoides superbus, Late Middle Cambrian, Upper Marjum Formation, House Range, Millard County, Utah, USA - Houston Museum of Natural Science - DSC01415.JPG|thumb|upright=0.672|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
 * PlatystrophiaOrdovician.jpg †[[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
 * Pseudomelania shell cropped.png †[[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
 * Renalia reconstruction.jpg †[[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
 * Saukiidae - Saukiella pepinensis.JPG †[[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
 * Solemya elarraichensis holotype.jpg [[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
 * Liospiriferina rostrata Noir.jpg †[[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
 * Strophomena costellata brachial.jpg †[[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
 * Tricrepicephalus texanus CRF.jpg †[[Tricrepicephalus]]
 * †Tricrepicephalus coria
 * †Triticites
 * †Triticites ventricosus
 * †Tuberitina
 * †Turbinatocanina
 * †Turbinatocaninia – tentative report

U

 * †Uncaspis
 * †Uncaspis limbata
 * Uranolophus wyomingensis.JPG †[[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