This list of the Mesozoic life of Utah contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Utah and are between 252.17 and 66 million years of age.
A
†Abrekopsis †Abrekopsis depresispirus – type locality for species †Abydosaurus – type locality for genus †Abydosaurus mcintoshi – type locality for species †Aclistochara †Aclistochara bransoni †Acristavus †Acristavus gagslarsoni †Adelodelphys †Adelodelphys muizoni †Adelolophus – type locality for genus †Adelolophus hutchisoni – type locality for species †Admetopsis †Adocus †Aenigmadelphys †Aenigmadelphys archeri – type locality for species †Alamosaurus †Alamosaurus sanjuanensis †Albanerpeton †Albanerpeton cifellii – type locality for species †Albanerpeton galaktion †Albanerpeton gracilis †Albanerpeton nexuosus †Allocrioceras †Allocrioceras annulatum †Allosaurus †Allosaurus fragilis †Allosaurus jimmadseni – type locality for species †Alphadon †Alphadon attaragos †Alphadon eatoni – type locality for species †Alphadon halleyi †Alphadon marshi – or unidentified comparable form †Alphadon sahnii †Alzadites †Alzadites incomptus †Amberleya – tentative report †Amblotherium †Amblotherium gracilis †Ameribaatar – type locality for genus †Ameribaatar zofiae – type locality for species †Ameribataar †Ameribataar zofiae Amia †Ampezzopleura †Ampezzopleura rugosa – type locality for species †Amplovalvata †Anaflemingites †Anaflemingites silberlingi – or unidentified related form †Anasibirites †Anasibirites angulosus †Anasibirites bastini †Anasibirites hircinus †Anasibirites kingianus †Anasibirites mojsisovicsi †Anasibirites multiformis †Anasibirites tenuistriatus †Anawasatchites †Anchisauripus †Anchisauripus sillimani †Anchistodelphys – type locality for genus †Anchistodelphys archibaldi – type locality for species †Anchistodelphys delicatus – type locality for species †Anchura †Anemia †Anemia dakotensis †Anemia dicksoniana †Anemia fremontii †Animantarx – type locality for genus †Animantarx ramaljonesi – type locality for species †Anisomyon Anomia †Anomoepus †Apatopus †Apatopus lineatus †Apatosaurus †Apatosaurus louisae – type locality for species †Apistodon – report made of unidentified related form or using admittedly obsolete nomenclature †Apistodon exiguus – or unidentified related form †Aquiladelphis – tentative report †Aquiladelphis laurae – type locality for species †Araeodon †Araeodon intermissus †Araucariacites †Araucariacites australis †Araucariacites fissus †Araucarioxylon †Arcomya †Arctoceras †Arctoceras tuberculatum †Arctoprionites †Arctoprionites resseri †Arvinachelys – type locality for genus †Arvinachelys goldeni – type locality for species †Aspenites †Aspenites acutus Astarte †Astarte livingstonensis †Astarte meeki Asteriacites †Asteriacites lumbricalis †Astralopteris †Astralopteris coloradica †Astroconodon †Astroconodon delicatus – type locality for species †Atreipus †Atreipus milfordensis †Athenar – type locality for genus †Athenar bermani – type locality for species †Aublysodon – tentative report †Aucellina †Austrotindaria †Austrotindaria canalensis †Austrotindaria svalbardensis †Avitotherium – type locality for genus †Avitotherium utahensis – type locality for species
B
†Baena †Baibisha – or unidentified comparable form †Bajarunia †Bajarunia confusionensis – type locality for species †Bakevellia †Bakevellia costata †Bakevellia costatus – or unidentified comparable form †Bakevellia exporrecta †Bakevellia silberlingi – type locality for species †Barosaurus †Barosaurus lentus †Basilemys †Batrachopus †Battenizyga †Battenizyga eotriassica – type locality for species †Bernissartia †Bicuspidon – type locality for genus †Bicuspidon numerosus – type locality for species †Bicuspidon smikros – type locality for species †Borissiakoceras †Bothriagenys – type locality for genus †Bothriagenys mysterion – type locality for species †Brachauchenius †Brachauchenius lucasi †Brachiosaurus †Brachychirotherium †Brachychirotherium thuringiacum †Brachyphyllum †Brachyphyllum crassicaule †Brasilichnium †Brontomerus – type locality for genus †Brontomerus mcintoshi – type locality for species †Brontopodus †Brontosaurus †Brontosaurus parvus †Brownichnus †Brownichnus favosites – type locality for species †Bryceomys †Bryceomys fumosus – type locality for species †Bryceomys hadrosus †Bryceomys intermedius – type locality for species
C
†Callialasporites †Callialasporites segmentatus †Callialasporites turbatus Callistina †Callistina alta – or unidentified related form †Calycoceras †Calycoceras naviculare †Camarasaurus – type locality for genus †Camarasaurus lentus – type locality for species Campeloma †Camptonectes †Camptonectes platessiformis †Camptonectes stygius †Camptosaurus †Camptosaurus dispar †Cantioscyllium – or unidentified comparable form †Carmelopodus – type locality for genus †Carmelopodus untermannorum – type locality for species †Carycorbula †Carycorbula nematophora †Cassiope †Cassiope utahensis †Cedaromys †Cedaromys bestia – type locality for species †Cedaromys hutchisoni – or unidentified comparable form †Cedaromys minimus – 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 †Cedroxylon †Ceratodus †Ceratosaurus †Ceratosaurus nasicornis †Ceratosaurus dentisulcatus – type locality for species †Cercomya †Cercomya punctata †Cerebropollenites †Cerebropollenites macroverruesus Cerithiopsis †Chamops †Chamops segnis †Characichnos †Chartronella †Chartronella pagina – type locality for species †Chartronella unicostata – type locality for species †Chinlea – type locality for genus †Chinlea sorenseni – type locality for species †Chirotherium †Chirotherium rex – or unidentified comparable form Chlamys †Chondrites †Churkites †Churkites noblei †Cimexomys †Cimexomys antiquus – or unidentified comparable form †Cimexomys gregoryi – type locality for species †Cimolodon †Cimolodon electus †Cimolodon nitidus – or unidentified comparable form †Cimolodon similis †Cimolodon wardi – type locality for species †Cimolomys †Cimolomys clarki †Cimolomys milliensis – type locality for species †Cionichthys – type locality for genus †Cionichthys dunklei – type locality for species Cladophlebis †Cladophlebis constricta †Cladophlebis parva †Claraia †Cnodontosaurus – type locality for genus †Cnodontosaurus suchockii – type locality for species †Coelophysis – tentative report †Coelostylina †Coelostylina angulifera – or unidentified comparable form †Coelostylina costata – type locality for species †Coelostylina virginensis – type locality for species †Coelurus †Coelurus fragilis †Compsemys †Confusionella †Confusionella loczyi †Coniophis †Coniopteris †Coniopteris hymenophylloides †Contogenys †Contogenys sloani – or unidentified comparable form Corbula †Cordillerites †Cordillerites compressus †Corviconodon †Corviconodon utahensis – type locality for species Cossmannea †Cossmannea imayi †Cossmannea imlayi †Cossmannea kanabensis †Costatoria †Cowboyiceras – type locality for genus †Cowboyiceras farwestense – type locality for species †Cretorectolobus †Crittendenia †Ctenacodon †Cteniogenys †Ctenostreon †Ctenostreon gikshanensis – or unidentified comparable form Cucullaea †Cucullaea haguei †Culicolestes – type locality for genus †Culicolestes kielanae – type locality for species †Cycadeoidea †Cycadeoidea cleavelandii †Cycadeoidea medullara Cylichna †Cylindrobullina †Cylindrobullina convexa – type locality for species †Cymbophora †Cynepteris †Cynepteris lasiophora †Cypellospongia – type locality for genus †Cypellospongia fimbriartis – type locality for species †Czekanowskia †Czekanowskia turneri – type locality for species
D
†Dakotadens – type locality for genus †Dakotadens morrowi – type locality for species †Dakotadens pertritus – type locality for species †Dakotamys †Dakotamys malcolmi – type locality for species †Dakotaseps – type locality for genus †Dakotaseps gillettorum – type locality for species †Dakotasuchus †Dakotasuchus kingi †Deinonychus †Deinosuchus †Deinosuchus hatcheri †Denazinemys †Denazinemys nodosa Dentalium †Dentalium sublineatum – or unidentified related form †Diabloceratops – type locality for genus †Diabloceratops eatoni – type locality for species †Dicothodon – type locality for genus †Dicothodon cifelli †Dicothodon cifellii – type locality for species †Dicothodon moorensis – type locality for species †Dieneroceras †Dieneroceras dieneri †Dimekodontosaurus – type locality for genus †Dimekodontosaurus madseni – type locality for species †Dinehichnus – type locality for genus †Dinehichnus socialis – type locality for species †Dinochelys – type locality for genus †Dinochelys whitei – type locality for species †Dinophyton †Dinophyton spinosus †Dinosauropodes – type locality for genus †Dinosauropodes bransfordii †Dinosauropodes magrawii – type locality for species †Dinosauropodes osborni †Dinosauropodes wilsoni †Diplochilus – tentative report †Diplodocus †Diplodocus hallorum †Diplodocus longus Discinisca – report made of unidentified related form or using admittedly obsolete nomenclature †Docodon †Doswellia †Drepanocheilus †Drepanocheilus ruidium †Dryolestes †Dryolestes priscus †Dryosaurus †Dryosaurus elderae – type locality for species †Dystrophaeus – type locality for genus †Dystrophaeus viaemalae – type locality for species
E
†Elegantinia Elliptio †Enchodus †Enneabatrachus †Entalophora †Entalophora stokesi †Entolioides †Entolium †Entradasuchus – type locality for genus †Entradasuchus spinosus – type locality for species †Eoalphadon †Eoalphadon clemensi – type locality for species †Eoalphadon lillegraveni – type locality for species †Eoalphadon woodburnei – type locality for species †Eocephalites †Eocephalites primus †Eodelphis †Eoginkgoites †Eolambia – type locality for genus †Eolambia caroljonesa – type locality for species †Eopolycotylus – type locality for genus †Eopolycotylus rankini – type locality for species †Equisetites †Equisetum †Equisetum burchardtii †Equisetum UD006 – informal †Eryma †Eryma jungostrix †Eucalyptus †Eucalyptus dakotensis †Eumorphotis †Eumorphotis beneckei – or unidentified comparable form †Eumorphotis ericius – type locality for species †Eumorphotis hinnitidea †Eumorphotis multiformis †Eumorphotis venetiana †Eumorphotis virginensis – type locality for species †Eunaticina †Eunaticina textilis †Euomphaloceras †Euspira †Euspira concinna †Euthlastus †Euthlastus cordiformis †Eutretauranosuchus †Evazoum †Exesipollenites †Exesipollenites tumulosus †Exogyra †Exogyra acroumbonata †Exogyra levis †Exostinus – or unidentified comparable form
F
†Fabrosaurus – tentative report †Falcarius – type locality for genus †Falcarius utahensis – type locality for species Ficus †Ficus daphnogenoides †Flemingites †Fona – type locality for genus †Fona herzogae – type locality for species †Frenelopsis †Frenelopsis varians †Frenelopsis variens
G
†Gastonia – type locality for genus †Gastonia burgei – type locality for species †Gastonia lorriemcwhinneyae – type locality for species †Geltena †Geminiraptor †Geminiraptor suarezarum †Germanonautilus – tentative report †Gervillaria †Gervillaria montanaensis †Gervillia Gleichenia †Gleichenia comptoniaefolia †Gleichenia delicatula †Glirodon – type locality for genus †Glirodon grandis – type locality for species Globularia – tentative report †Glyptops