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
Selected Mesozoic taxa of Utah
†Abydosaurus – type locality for genus †Abydosaurus mcintoshi – type locality for species †Acristavus †Acristavus gagslarsoni †Adelolophus – type locality for genus †Adelolophus hutchisoni – type locality for species †Adocus †Alamosaurus †Alamosaurus sanjuanensis †Albanerpeton †Albanerpeton cifellii – type locality for species †Albanerpeton galaktion †Albanerpeton gracilis †Albanerpeton nexuosus †Allocrioceras †Allosaurus †Allosaurus fragilis †Alphadon †Alphadon attaragos †Alphadon eatoni – type locality for species †Alphadon halleyi †Alphadon marshi – or unidentified comparable form †Alphadon sahnii †Amblotherium †Ameribaatar – type locality for genus †Ameribaatar zofiae – type locality for species Amia †Anaflemingites †Anasibirites †Anasibirites angulosus †Anasibirites bastini †Anasibirites hircinus †Anasibirites kingianus †Anasibirites mojsisovicsi †Anasibirites multiformis †Anasibirites tenuistriatus †Anchisauripus †Anemia †Animantarx – type locality for genus †Animantarx ramaljonesi – type locality for species Anomia †Anomoepus †Apatopus †Apatosaurus †Apatosaurus louisae – type locality for species †Araeodon †Araucarioxylon †Arctoceras †Arctoprionites †Arvinachelys – type locality for genus †Aspenites Astarte Asteriacites †Astroconodon †Astroconodon delicatus – type locality for species †Atreipus †Aublysodon – tentative report †Baena †Barosaurus †Barosaurus lentus †Basilemys †Bernissartia †Brachauchenius †Brachauchenius lucasi †Brachiosaurus †Brachyphyllum †Brontomerus – type locality for genus †Brontomerus mcintoshi – type locality for species †Brontopodus †Brontosaurus †Brontosaurus parvus †Bryceomys †Bryceomys fumosus – type locality for species †Bryceomys hadrosus †Bryceomys intermedius – type locality for species †Calycoceras †Camarasaurus – type locality for genus †Camarasaurus lentus – type locality for species Campeloma †Camptosaurus †Camptosaurus dispar †Carmelopodus – type locality for genus †Cassiope †Cedaromys †Cedaromys bestia – type locality for species †Cedaromys parvus – type locality for species †Cedarosaurus – type locality for genus †Cedarosaurus weiskopfae – type locality for species †Cedarpelta – type locality for genus †Cedarpelta bilbeyhallorum – type locality for species †Cedrorestes – type locality for genus †Cedrorestes crichtoni – type locality for species †Ceratodus †Ceratosaurus †Ceratosaurus nasicornis Cerithiopsis †Chamops †Chinlea – type locality for genus †Chirotherium †Chirotherium rex – or unidentified comparable form Chlamys †Chondrites †Cimexomys †Cimexomys antiquus – or unidentified comparable form †Cimolodon †Cimolodon electus †Cimolodon nitidus – or unidentified comparable form †Cimolodon similis †Cimolomys †Cimolomys clarki †Cimolomys milliensis – type locality for species Cladophlebis †Cladophlebis constricta †Cladophlebis parva †Claraia †Coelophysis – tentative report †Coelurus †Coelurus fragilis †Compsemys †Coniophis Corbula †Cretorectolobus †Ctenacodon †Cteniogenys Cucullaea †Cycadeoidea Cylichna †Dakotamys †Dakotamys malcolmi – type locality for species †Dakotasuchus †Dakotasuchus kingi †Deinonychus †Denazinemys †Denazinemys nodosa Dentalium †Diabloceratops – type locality for genus †Diabloceratops eatoni – type locality for species †Dinehichnus – type locality for genus †Dinochelys – type locality for genus †Diplodocus †Diplodocus hallorum †Diplodocus longus Discinisca – report made of unidentified related form or using admittedly obsolete nomenclature †Docodon †Doswellia †Dryolestes †Dryosaurus †Dryosaurus altus †Dystrophaeus – type locality for genus †Dystrophaeus viaemalae – type locality for species Elliptio †Enchodus †Enneabatrachus †Entradasuchus – type locality for genus †Entradasuchus spinosus – type locality for species †Eocephalites †Eodelphis †Eolambia – type locality for genus †Eolambia caroljonesa – type locality for species †Eopolycotylus – type locality for genus †Eopolycotylus rankini – type locality for species †Equisetum †Eryma †Eucalyptus †Eunaticina †Euomphaloceras †Euspira †Euthlastus †Eutretauranosuchus †Exogyra †Exogyra acroumbonata †Exogyra levis †Fabrosaurus – tentative report †Falcarius – type locality for genus †Falcarius utahensis – type locality for species Ficus †Flemingites †Gastonia – type locality for genus †Gastonia burgei – type locality for species †Geminiraptor †Geminiraptor suarezarum †Germanonautilus – tentative report †Gervillaria †Gervillia Gleichenia †Glirodon – type locality for genus †Glirodon grandis – type locality for species Globularia – tentative report †Glyptops †Gondolella †Gondolella planata †Goniobasis – tentative report †Goniopholis †Grallator †Gryphaea †Gryposaurus †Gryposaurus monumentensis – type locality for species †Hagryphus – type locality for genus †Hagryphus giganteus – type locality for species †Hamulus – tentative report †Hausmania †Hedenstroemia †Hemicalypterus – type locality for genus †Hippodraco – type locality for genus †Hippodraco scutodens – type locality for species †Hispanosauropus †Homalopoma †Hoplitosaurus – or unidentified comparable form †Hoplosuchus – type locality for genus †Hoplosuchus kayi – type locality for species †Hybodus †Iguanacolossus – type locality for genus †Iguanacolossus fortis – type locality for species †Iguanodon †Iguanodon ottingeri – type locality for species Ilex †Ilex serrata †Inoceramus †Inoceramus albertensis – or unidentified comparable form †Inoceramus flavus †Inoceramus gilberti †Inoceramus koeneni †Inoceramus pictus †Inoceramus tenuistriatus – tentative report †Inoceramus undabundus †Inyoites †Inyoites beaverensis – type locality for species †Inyoites oweni †Iridotriton – type locality for genus †Ischyrhiza – or unidentified comparable form Isognomon †Janumys – type locality for genus †Janumys erebos – type locality for species †Janumys erebros †Jugulator †Jugulator amplissimus †Kallirhynchia †Kamerunoceras †Kayentapus †Koparion – type locality for genus †Koparion douglassi – type locality for species †Kosmoceratops – type locality for genus †Kosmoceratops richardsoni – type locality for species †Kouphichnium †Leidyosuchus †Lepidotes Lepisosteus †Leptalestes Lima †Lissodus †Lonchidion Lopha Lucina †Lythronax – type locality for genus †Lythronax argestes – type locality for species †Machairoceratops – type locality for genus †Machairoceratops cronusi – type locality for species †Macroelongatoolithus Magnolia †Mammites †Marshosaurus – type locality for genus †Marshosaurus bicentesimus – type locality for species †Martharaptor – type locality for genus †Martharaptor greenriverensis – type locality for species †Meekoceras †Meekoceras davisi †Meekoceras gracilitatis †Meekoceras millardense – type locality for species †Meekoceras olivieri – type locality for species †Megalosauripus †Megasphaeroceras †Melvius