List of the Mesozoic life of South Dakota

This list of the Mesozoic life of South Dakota contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of South Dakota and are between 252.17 and 66 million years of age.

A

 * Acipenser – or unidentified comparable form
 * †Actinocamax
 * †Actinosepia
 * †Actinosepia canadensis
 * †Adocus
 * †Agerostrea
 * †Agerostrea translucida
 * †Allosaurus
 * Alphadon cropped.png †[[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 skeleton.jpg †[[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 grandis shell.JPG †[[Baculites]]
 * †Baculites clinolobatus
 * †Baculites compressus
 * †Baculites grandis
 * †Baculites larsoni
 * †Baculites ovatus
 * †Baculites yokoyamai
 * †Bananogmius
 * †Bananogmius evolutus
 * †Baptornis
 * †Baptornis varneri – type locality for species
 * Barosaurus lentus1.jpg †[[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 NT small.jpg †[[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
 * Camarasaurs1.jpg †[[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 BW.jpg †[[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 proph1DB.jpg †[[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
 * Shark fossil.jpg †[[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 fossil cropped.png †[[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
 * Dakotaraptor RPR cropped.png †[[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
 * Anatotitan BW.jpg]] †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
 * GlobidensDB2.jpg †[[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.png †[[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 BW.jpg †[[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 Fossil, from NewMexicoMuseum cropped.png †[[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
 * Inoceramus steenstrup, world's largest fossil mollusk.jpg †[[Inoceramus]]
 * †Inoceramus apicalis
 * †Inoceramus ginterensis
 * †Inoceramus tenuis – or unidentified related form
 * †Inoceramus tenuistriatus – tentative report
 * †Ischyodus
 * †Ischyodus rayhaasi
 * Isurus

J

 * †Jeletskytes
 * †Jeletskytes nodosus
 * Ammonite Jeletzkytes.jpg †[[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
 * [[File:Leidyosuchus canadensis, Dinosaur Provincial Park, Alberta, Canada, Late Cretaceous - Royal Ontario Museum - DSC00090.JPG|thumb|upright|Fossilized skull of the Late Cretaceous alligator relative Leidyosuchus]] †[[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 BW.jpg †[[Mosasaurus]]
 * †Mosasaurus missouriensis – type locality for species
 * †Myledaphus
 * †Myledaphus bipartitus

N

 * American Lotus (Nelumbo lutea) 01.jpg †[[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" sp. by Tom Parker.png †[[Ornithomimus]]
 * †Osmakasaurus
 * †Osmakasaurus depressus – type locality for species
 * Ostrea
 * †Ostrea translucida
 * †Otoscaphites
 * †Otoscaphites seabeensis
 * †Oxytoma
 * †Oxytoma nebrascana

P

 * Pachycephalosaurus wyomingensis dinosaur (Upper Cretaceous; Montana, USA).jpg †[[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
 * Platecarpus2010.jpg †[[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 overtoni.jpg †[[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 longiceps mmartyniuk wiki.png †[[Pteranodon]]
 * †Pteranodon longiceps
 * †Ptychodus
 * †Ptychodus janewayii
 * †Ptychodus occidentalis

Q

 * Quercus
 * †Quercus Wardiana
 * †Quereuxia
 * †Quereuxia angulata

R

 * †Rhamnus
 * †Rhamnus cleburni
 * †Rhombopsis
 * †Rhombopsis subturritus
 * Richardoestesia.png †[[Richardoestesia]]
 * †Richardoestesia isosceles

S



 * 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
 * Styxocycle by johnson mortimer-dafh0ce.gif †[[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 filamented.jpg †[[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 Rex Holotype.jpg †[[Tyrannosaurus]]
 * †Tyrannosaurus rex

V

 * †Vanikoropsis
 * †Vanikoropsis nebrascensis
 * †Viburnites
 * †Viburnites Evansanus
 * Viviparus contectus met operculum2.JPG [[Viviparus]]

W

 * †Willimactra

Y

 * †Yezoites
 * Yoldia
 * †Yoldia lacrima
 * †Yoldia rectangularis

Z

 * Ziziphus
 * †Ziziphus fibrillosus