Paleozoic
Selected Paleozoic taxa of Wyoming
- † Actinoceras
- † Agassizodus
- † Agnostogonus
- † Amphiscapha
- † Amplexus
- † Archaeocidaris
Life restoration of the Middle-Late Ordovician jawless fish Astraspis - † Aviculopecten
- † Aviculopecten basilicus – or unidentified comparable form
- † Aviculopecten girtyi
- † Aviculopecten gryphus
- † Aviculopecten kaibabensis – or unidentified comparable form
- † Bellerophon
- † Blountiella
- † Bowmania
- † Bucheria – type locality for genus
Restorative portrait of the Permian synapsid (mammal precursor) Burnetia - † Campodus
- † Caninia
- † Cardipeltis
- † Catenipora
- † Cavusgnathus
- † Cedaria
- † Cephalaspis
- † Charactoceras – tentative report
- † Chirognathus
- † Chonetes
- † Cleiothyridina
- † Cleiothyridina atrypoides
- † Cleiothyridina elegans – or unidentified related form
- † Cleiothyridina hirsuta
- † Cleiothyridina sublamellosa – or unidentified related form
- † Coleodus
Fossilized shell of the Late Devonian-Permian brachiopod Composita - † Composita elongata
- † Composita laevis – or unidentified related form
- † Composita mira
- † Composita ovata
- † Composita sigma
- † Composita subquadrata
- † Composita subtilita
- † Composita sulcata
- † Conocardium
- † Coosella
- † Coosia
- † Coosina
- † Cordylodus
- † Crepicephalus
- † Ctenacanthus
- † Cyrtogomphoceras
- † Deckera
- † Dentalium
- † Distichophytum
- † Drepanophycus
- † Earlandia
- † Edmondia
Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras - † Euomphalus
- † Favosites
- † Gastrioceras – report made of unidentified related form or using admittedly obsolete nomenclature
- † Genevievella
- † Geragnostus
- † Girvanella
- † Glikmanius
- † Glyptopleura
- † Goniatites – tentative report
- † Gosslingia
Life restoration of the Permian Chimaera relative Helicoprion - † Homagnostus
- † Hyolithes
- † Hypseloconus
- † Idiognathoides
- † Ithyektyphus
- † Janassa
- † Kendallina
- † Kingstonia
- † Kionoceras
- † Kochoceras
- † Lambeoceras
- † Leclercqia
- † Lingula
- † Lingulella
- † Liroceras
- † Lonchocephalus
- † Maryvillia
- † Metacoceras
Restoration of the Cambrian trilobite Meteoraspis - † Micromitra
- † Minicephalus – type locality for genus
- † Naticopsis
- † Naticopsis judithae
- † Naticopsis kaibabensis
- † Naticopsis marthaae – or unidentified comparable form
- † Neospirifer
- Nucula – tentative report
- † Olenoides
- † Ozarkodina
- † Paladin
- † Paractinoceras
- † Peripetoceras
Fossilized shell of the Ordovician brachiopod Plaesiomys - † Platyceras
- † Platystrophia
- † Posidonia
- † Prodentalium
- † Protaspis
- † Pseudomelania – tentative report
- † Psilophyton
- † Rawlinsella
- † Renalia
- † Sallya
Fossil of the Cambrian-Ordovician trilobite Saukiella - † Sawdonia
- Solemya
- † Solenochilus
- † Spiriferina
- † Spyroceras
- † Stearoceras
- † Streptognathodus
- † Strophomena
- † Syspacheilus
- † Tainoceras
- † Tetrataxis
Fossil of the Cambrian trilobite Tricrepicephalus - † Uncaspis
- † Uranolophus
- † Westonoceras
- † Wilkingia
- † Winnipegoceras
- † Worthenia
- † Zellerina
