This list of the prehistoric life of Utah contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Utah.
Precambrian The Paleobiology Database records no known occurrences of Precambrian fossils in Utah.
Paleozoic
Selected Paleozoic taxa of Utah †Acodus †Agnostus †Amphiscapha †Amplexus †Annularia †Annularia stellata †Anomalocaris †Anomphalus †Archimedes †Archimedes macfarlani †Arcuolimbus †Arenicolites †Artisia †Asaphiscus †Asaphiscus wheeleri †Athyris †Athyris lamellosa †Atrypa †Atrypa parva – or unidentified comparable form †Atrypid †Aulopora – tentative report †Aviculopecten †Aviculopecten girtyi †Aviculopecten kaibabensis – or unidentified comparable form †Aysheaia †Bathyuriscus †Beckwithia †Benthamaspis †Beyrichoceras †Biscoia †Bolbocephalus †Bonneterrina †Bourbonnella †Bowmania †Branchiocaris †Brassicicephalus †Calamites †Calamites cistii – or unidentified comparable form †Calamites suckowii †Callipteris – tentative report †Callocladia †Camarotoechia †Campbelloceras – tentative report †Canadaspis †Canadaspis perfecta – or unidentified comparable form †Canadia †Caninia †Cardiopteris †Carolinites †Cavusgnathus †Cedaria †Chancelloria †Chancia †Choia †Chondrites †Chonetes †Cladochonus †Cleiothyridina †Clonograptus †Coenites †Composita †Composita mira †Composita ovata †Composita parasulcata †Composita plana †Composita subtilita †Composita trinuclea †Coosella †Coosina †Cordaicarpus †Cordaites †Cordaites principalis Crania †Cravenoceras †Crepicephalus †Cruziana †Ctenospondylus †Cybelopsis †Cyclopteris †Cystodictya †Deiracephalus Dentalium †Diadectes †Diagoniella †Dictyonema †Didymograptus †Didymograptus nitidus – or unidentified comparable form †Dimeropygiella †Diplorrhina †Donaldina †Dresbachia †Echinaria †Ectosteorhachis – or unidentified related form †Ehmaniella †Eldonia †Eleutherocentrus †Elrathia †Elrathina †Emeraldella †Endoceras †Eryops †Euptychaspis †Fenestella †Forteyops †Genevievella †Girvanella †Gnathodus †Gogia †Goniatites †Gunterichthys – type locality for genus †Hamptonia †Haplophrentis †Hazelia †Helicoprion †Hematites †Hemirhodon †Hindia †Hintzeia †Homagnostus †Huronia †Hyolithellus †Hyolithes †Idiognathodus †Illaenus †Irvingella †Jeffersonia †Kanoshia †Kawina †Kingstonia †Kirkella †Komia †Kootenia †Lachnostoma †Leanchoilia †Lejopyge †Lepidodendron †Lepidodendron aculeatum †Lepidodendron obovatum †Lepidophyllum †Lepidostrobus †Leptomitus Lima Limatula Lingula †Lingulella †Llanoaspis †Lochriea †Lonchocephalus †Lyracystis †Margaretia †Margaretia dorus †Marpolia †Matthevia †Metacoceras †Meteoraspis †Micromitra Modiolus – report made of unidentified related form or using admittedly obsolete nomenclature †Mollisonia †Morania †Naraoia †Naticopsis †Neospirifer †Neospirifer cameratus †Neospirifer kansasensis †Neospirifer triplicatus †Neuropteris †Neuropteris gigantea †Neuropteris heterophylla †Niobe – tentative report †Nisusia †Norwoodia †Obolus †Ogygopsis †Olenellus †Olenoides †Olenoides nevadensis †Olenoides serratus †Ophiacodon †Ophiacodon navajovicus †Orthis †Oryctocephalus †Ottoia †Ottoia prolifica †Ozarkodina †Pagetia †Paladin Palaeoaplysina †Palaeoscolex †Pelagiella †Pentamerus †Peronopsis †Peronopsis interstricta †Perspicaris †Phillipsia †Phyllograptus Pinna – report made of unidentified related form or using admittedly obsolete nomenclature †Platycrinites †Platyhystrix – or unidentified comparable form †Platyhystrix rugosus †Prodentalium †Prohedinia †Protopliomerella †Protospongia †Ptychagnostus †Ptychagnostus atavus †Pugnax †Punka †Quadratia †Rayonnoceras †Receptaculites †Ribeiria †Rusophycus †Saukiella †Scenella †Schmalenseeia †Schwagerina †Scolicia †Selkirkia †Selkirkia columbia – or unidentified comparable form †Sidneyia †Sigillaria †Sigillaria brardii Sphenacodon †Sphenophyllum †Sphenophyllum angustifolium †Sphenophyllum verticillatum †Sphenopteris †Spinofacia – type locality for genus †Spirifer †Spirifer centronatus †Spirifer opimus †Spiriferina Spirorbis †Stenorhachis – tentative report †Stigmaria †Syringopora †Teichichnus – tentative report †Terranovella †Tetragraptus †Thalassinoides – tentative report †Tricrepicephalus †Trigonocercella †Trinodus †Triplagnostus †Trocholites †Tseajaia †Tseajaia campi – type locality for species †Tuzoia †Utaherpeton – type locality for genus †Vauxia †Walcottoceras – tentative report †Waptia †Waptia fieldensis – or unidentified comparable form †Weeksina †Wilkingia †Wiwaxia †Wiwaxia corrugata †Worthenia †Xenacanthus – or unidentified related form †Yuknessia †Zacanthoides †Zittelloceras
Mesozoic
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