List of the Mesozoic life of South Dakota

• Acipenser – or unidentified comparable form • †Actinocamax • †Actinosepia • †Actinosepia canadensis • †Adocus • †Agerostrea • †Agerostrea translucida • †Allosaurus • †Alphadon'' • †Alphadon marshi • †Amesoneuron • †Amesoneuron FU37 – informal • †Anatotitan • †Anatotitan copei • †Anisomyon • †Anomia • †Anomia gryphorhyncha • †Antillocaprina • †Anzu – type locality for genus • †Anzu wyliei – type locality for species • †Apatosaurus • †Araucarioxylon • †Araucarioxylon hoppertonae – type locality for species • †Archelon'' – type locality for genus • †Archelon ischryos • †Archelon ischyros – type locality for species • †Artocarpus – report made of unidentified related form or using admittedly obsolete nomenclature • †Artocarpus lessigiana • Aspideretes • †Asplenium • †Asplenium Dicksonianum • †Axestemys – or unidentified comparable form • †Axestemys splendida ==B==

• †Baculites'' • †Baculites clinolobatus • †Baculites compressus • †Baculites grandis • †Baculites larsoni • †Baculites ovatus • †Baculites yokoyamai • †Bananogmius • †Bananogmius evolutus • †Baptornis • †Baptornis varneri – type locality for species • rearing to defend itself against a pair of the theropod Allosaurus †Barosaurus'' – type locality for genus • †Barosaurus lentus – type locality for species • †Basilemys • †Basilemys sinuosa • †Belemnitella • †Belemnitella bulbosa • Beryx – or unidentified related form • †Binneyites • †Binneyites carlilensis • †Bisonia • †Bisonia niemii • †Bolodon • †Bolodon hydei – type locality for species • †Borealosuchus • †Borealosuchus sternbergii • †Borissiakoceras – tentative report • Brachidontes • †Brachychampsa'' • †Brachychampsa montana • †Brodavis • †Brodavis baileyi – type locality for species • †Bubodens – type locality for genus • †Bubodens magnus – type locality for species ==C==

• †Caenagnathus • †Calycoceras • †Calycoceras boreale – type locality for species • †Calycoceras dromense – or unidentified comparable form • †Camarasaurus'' • Campeloma • †Camptonectes • †Camptonectes hallii • †Carabites • †Carabites russelli – type locality for species • †Cataceramus – or unidentified comparable form • †Cataceramus tenuilineatus • †Caturus • †Caturus dartoni – type locality for species • †Celastrophyllum • †Celastrophyllum pulchrum – type locality for species • †Champsosaurus'' • †Cimexomys • †Cimolodon • †Cimolodon nitidus • †Cimolomys • †Cimolomys gracilis • †Cissites • †Cissites ingens • †Cissites salisburiaefolius • †Claibornites • †Claibornites cedrensis • †Claosaurus • †Claosaurus affinis – type locality for species • †Clavipholas • †Clidastes'' • †Clidastes propython • †Clisocolus • †Clisocolus moreauensis • †Cocculus • †Cocculus flabella • †Collignoniceras • †Collignoniceras collisniger – type locality for species • †Collignoniceras jorgenseni – type locality for species • †Collignoniceras percarinatum • †Collignoniceras praecox • †Collignoniceras vermilionense • †Collignoniceras woolgari • †Collignoniceras woollgari • †Compsemys • †Compsemys victa • Corbula • †Corbula crassimarginata • †Corbulamella • †Corbulamella gregaria • †Crassatellina • †Crassatellina hollandi • †Crenella • †Crenella elegantula • †Cretodus • †Cretolamna'' • †Cretolamna appendiculata • †Cteniogenys • †Cteniogenys antiquus • Cucullaea • †Cucullaea nebrascensis • †Cupressinocladus • †Cupressinocladus interruptus • †Curculionites • †Curculionites hylobioides – type locality for species • †Curculionites northropi – type locality for species • †Curculionites vulpinus – type locality for species • †Cuspidaria • †Cuspidaria moreauensis • †Cuspidaria ventricosa • †Cycadeoidea'' • †Cycadeoidea aspera – type locality for species • †Cycadeoidea cicatricula – type locality for species • †Cycadeoidea colei – type locality for species • †Cycadeoidea colossalis – type locality for species • †Cycadeoidea dacotensis • †Cycadeoidea excelsa – type locality for species • †Cycadeoidea formosa – type locality for species • †Cycadeoidea furcata – type locality for species • †Cycadeoidea ingens – type locality for species • †Cycadeoidea insolita – type locality for species • †Cycadeoidea jenneyana • †Cycadeoidea Jenneyana • †Cycadeoidea marshiana – type locality for species • †Cycadeoidea mcbridei – type locality for species • †Cycadeoidea McBridei – type locality for species • †Cycadeoidea minnekahtensis – type locality for species • †Cycadeoidea nana – type locality for species • †Cycadeoidea occidentalis – type locality for species • †Cycadeoidea paynei – type locality for species • †Cycadeoidea pulcherrima – type locality for species • †Cycadeoidea stillwelli – type locality for species • †Cycadeoidea turrita – type locality for species • †Cycadeoidea Wellsii – type locality for species • †Cyclurus • †Cyclurus fragosus • †Cymbophora • †Cymbophora warrenana • Cyrtodaria • †Cyrtodaria minuta ==D==

• †Dakotadon • †Dakotadon lakotaensis • preying upon an ostrich dinosaur †Dakotaraptor'' – type locality for genus • †Dakotaraptor steini – type locality for species • †Dakoticancer • †Dakoticancer overanus • †Delphodon • †Delphodon comptus – or unidentified comparable form • †Desmatochelys • †Desmatochelys lowi • †Didelphodon • †Didelphodon vorax – or unidentified comparable form • †Diplodocus • †Discoscaphites • †Discoscaphites conradi • †Discoscaphites gulosus • †Discoscaphites rossi – type locality for species • †Dolichorhynchops • †Dolichorhynchops osborni • †Dosiniopsis • †Dosiniopsis deweyi • †Drepanochilus • †Drepanochilus evansi • †Dryophyllum • †Dryophyllum subfalcatum • †Dryophyllum tenneseensis • †Dunveganoceras • †Dunveganoceras pondi ==E==

• †Edmontonia • †Edmontonia longiceps • †Edmontosaurus'' • †Elasmosaurus • †Elasmosaurus intermedius – type locality for species • †Elatides • †Elatides longifolia • †Ellipsoscapha • †Embaphias – type locality for genus • †Embaphias circulosus – type locality for species • †Enchodus • †Erlingdorfia • †Erlingdorfia montana • †Ethmocardium • †Ethmocardium welleri • †Eubostrychoceras • †Eubostrychoceras matsumotoi • †Eucalycoceras • †Eucalycoceras pentagonum • †Eutrephoceras • †Eutrephoceras dekayi ==F==

• †Fokieniopsis • †Fokieniopsis catenulata ==G==

• †Galagadon – type locality for genus • †Galagadon nordquistae – type locality for species • †Geosternbergia • †Geosternbergia maiseyi – type locality for species • Gleichenia • †Gleichenia Zippei • †Globidens'' • †Globidens alabamensis • †Globidens dakotensis – type locality for species • †Globidens schurmanni – type locality for species • †Glossozamites • †Glossozamites Fontaineanus – type locality for species • †Glyptops • Glyptostrobus • †Glyptostrobus europaeus • †Goniomya • †Goniomya americana • †Gorgosaurus'' • †Grammatodon • †Grammatodon sulcatinus • †Granocardium • †Granocardium whitei • †Graphidula • †Graphidula culbertsoni • †Grewiopsis • †Grewiopsis saportana • †Gypsonictops • †Gypsonictops hypoconus • †Gyrostrea • †Gyrostrea subtrigonalis ==H==

• †Hainosaurus • †Hainosaurus neumilleri – type locality for species • †Hamites • †Hamites cimarronensis • †Helopanoplia • †Helopanoplia distincta • Hemiaster • †Hemiaster beecheri • †Hercorhynchus • †Hercorhynchus hollandi • †Hesperornis'' • †Hesperornis regalis – or unidentified comparable form • Hiatella – tentative report • †Hindsiella • †Hindsiella corsonensis • †Hoplitosaurus • †Hoplitosaurus marshi – type locality for species • †Hoploparia • †Hoploscaphites • †Hoploscaphites comprimus • †Hoploscaphites melloi – type locality for species • †Hoploscaphites nicolletii • †Hulettia • †Hulettia americana – type locality for species • †Hypoxytoma • †Hypoxytoma nebrascana • †Hypsilophodon • †Hypsilophodon wielandi – type locality for species ==I==

• †Ichthyodectes • †Infernolestes – type locality for genus • †Infernolestes rougieri – type locality for species • with a human indicating its size †Inoceramus'' • †Inoceramus apicalis • †Inoceramus ginterensis • †Inoceramus tenuis – or unidentified related form • †Inoceramus tenuistriatus – tentative report • †Ischyodus • †Ischyodus rayhaasi • Isurus ==J==

• †Jeletskytes • †Jeletskytes nodosus • †Jeletzkytes'' • †Jeletzkytes dorfi • †Jeletzkytes nebrascensis • †Jeletzkytes spedeni – type locality for species • Juliacorbula • †Juliacorbula crassimarginata • Jupiteria • †Jupiteria scitula ==L==

• †Lakotalestes – type locality for genus • †Lakotalestes luoi – type locality for species • Lamna • †Laurophyllum • †Laurophyllum wardiana • †Leepierceia • †Leepierceia preartocarpoides • †Leidyosuchus'' • †Lemnaceae • †Lemnaceae scutatum • †Lepidotes – tentative report • †Lepidotes lacotanus • Lepisosteus • †Lepisosteus occidentalis • †Leptalestes • †Leptalestes cooki • †Leptalestes krejcii • †Leptosolen • Limopsis • †Limopsis striatopunctatus • †Lioplacodes • †Lucina – tentative report ==M==

• Malletia • †Malletia evansi • †Marmarthia • †Marmarthia pearsonii • †Marmarthia trivialis • †Martinectes • †Martinectes bonneri • †Melvius • †Melvius thomasi • †Meniscoessus • †Meniscoessus robustus • †Mesodma • †Mesodma formosa • †Mesodma hensleighi • †Mesodma thompsoni • †Modiolus • †Modiolus attenuatus – or unidentified related form • †Modiolus galpinianus • †Modiolus meeki • †Mosasaurus'' • †Mosasaurus missouriensis – type locality for species • †Myledaphus • †Myledaphus bipartitus ==N==

• lotus †Nelumbo'' • †Nelumbo FU62 – informal • †Neocardioceras • †Neocardioceras transiens – type locality for species • †Nonactaeonina • †Nortedelphys • †Nortedelphys jasoni • Nucula • †Nucula cancellata • †Nucula percrassa • †Nucula planomarginata • Nuculana • †Nuculana grandensis • †Nuculana scitula • †Nymphalucina • †Nymphalucina occidentalis ==O==

• †Opertochasma • †Opertochasma cuneatum • †Ophiomorpha • †Ophiomorpha nodosa • †Ornithomimus'' • †Osmakasaurus • †Osmakasaurus depressus – type locality for species • Ostrea • †Ostrea translucida • †Otoscaphites • †Otoscaphites seabeensis • †Oxytoma • †Oxytoma nebrascana ==P==

• †Pachycephalosaurus'' – type locality for genus • †Pachycephalosaurus wyomingensis – type locality for species • †Pachyrhizodus • †Pahasapasaurus – type locality for genus • †Pahasapasaurus haasi – type locality for species • †Paleoaster • †Paleoaster inquirenda • †Palmoxylon • †Palmoxylon cheyennense • Panopea • †Panopea occidentalis • †Paronychodon • †Paronychodon lacustris • †Passumys – type locality for genus • †Passumys angelli – type locality for species • †Pediomys • †Pediomys elegans • Periploma • †Periploma subgracile • †Phelopteria • †Phelopteria linguaeformis • †Phelopteria minuta • †Phelopteria quadrate • Pholadomya • †Pholadomya deweyensis • †Pistia – report made of unidentified related form or using admittedly obsolete nomenclature • †Pistia corrugata • †Placenticeras • †Placenticeras pseudoplacenta • †Platanites • †Platanites marginata • Platanus • †Platanus cissoides • †Platecarpus'' • †Platecarpus somenensis – or unidentified comparable form • †Platecarpus tympaniticus • †Plesiobaena • †Plesiobaena antiqua • †Plioplatecarpus • †Plioplatecarpus primaevus – type locality for species • †Podozamites • †Podozamites lanceolatus • †Prionocyclus • †Prionocyclus macombi • †Prionocyclus novimexicanus • †Prognathodon'' • †Prognathodon overtoni – type locality for species • †Proplacenticeras • †Proplacenticeras stantoni • †Protacanthoceras • †Protacanthoceras proteus • †Protalphadon • †Protalphadon lulli – tentative report • †Protocardia • †Protocardia subquadrata • †Protolambda • †Protolambda florencae • †Protolambda hatcheri • †Protosphyraena • †Protostega • †Protostega marshii – type locality for species • †Pseudoptera • †Pseudoptera subtortuosa • †Pteranodon'' • †Pteranodon longiceps • †Ptychodus • †Ptychodus janewayii • †Ptychodus occidentalis ==Q==

• Quercus • †Quercus Wardiana • †Quereuxia • †Quereuxia angulata ==R==

• †Rhamnus • †Rhamnus cleburni • †Rhombopsis • †Rhombopsis subturritus • †Richardoestesia'' • †Richardoestesia isosceles ==S==

'' tree with a human to scale • Sassafras • †Sassafras Mudgii • †Scaphites • †Scaphites delicatulus • †Semitriton • †Semitriton buccinoides • †Sequoia • †Sequoia HC70 – informal • †Serrifusus • †Serrifusus dakotaensis • Solemya • †Solemya subplicata • †Sourimis • †Sourimis equilateralis • Spaniorinus • †Spaniorinus nicolleti • Sphaerium • †Sphenobaiera • †Sphenobaiera ikorfatensis • †Sphenodiscus • †Sphenodiscus beecheri – tentative report • †Sphenodiscus lobatus • †Sphenodiscus pleurisepta • †Spyridoceramus • †Spyridoceramus tegulatus • Squalicorax • †Squalicorax falcatus • Squalus • †Stramentum • †Stramentum haworthi • †Styxosaurus'' • †Styxosaurus browni • †Styxosaurus snowii – type locality for species • †Syncyclonema • †Syncyclonema halli ==T==

• †Tancredia • †Tancredia americana • †Tarrantoceras • †Tarrantoceras flexicostatum – or unidentified comparable form • †Tatankaceratops – type locality for genus • †Tatankaceratops sacrisonorum – type locality for species • †Taxodiaceaepollenites • Taxodium • †Taxodium olrikii • †Tellinimera • †Tellinimera scitula • †Tenuipteria • †Tenuipteria fibrosa • †Thescelosaurus'' • †Thescelosaurus neglectus • †Thespesius – type locality for genus • †Thespesius occidentalis – type locality for species • †Torosaurus • †Torosaurus latus • †Toxochelys • †Toxochelys latiremis • †Trachodon • †Trachybaculites • †Trachybaculites columna • †Tragodesmoceras • †Tragodesmoceras carlilense • †Tragodesmoceras carlilensis • †Triceratops • †Triceratops horridus • †Trochodendroides • †Trochodendroides nebrascensis • †Tylosaurus • †Tylosaurus proriger • †Tyrannosaurus'' • †Tyrannosaurus rex ==V==

• †Vanikoropsis • †Vanikoropsis nebrascensis • †Viburnites • †Viburnites Evansanus • freshwater snail Viviparus'' ==W==