SOUTH DAKOTA
13 MILES SOUTH AND 6 MILES WEST OF BUFFALO
HELL CREEK FORMATION
LANCIAN AGE
UPPER MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AVES LINNAEUS, 1758
AVEBREVICAUDA PAUL, 2001
SUBCLASS: ODONTORNITHES MARSH, 1873
INFRACLASS: ODONTOHOLCAE NOVA
MAGNORDER: HESPERORNITHES
ORDER: HESPERORNITHIFORMES FURBRINGER, 1888
Family: BRODAVIDAE Martin, Kurochkin & Tokaryk, 2012
*Baptornis baileyi
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SOUTH DAKOTA
TURTLE GRAVEYARD LOCALITY
HELL CREEK FORMATION
LANCIAN AGE
UPPER MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: CHELONOMORPHA KUHN, 1960
SUPERCOHORT: TESTUDINES LINNAEUS, 1758
COHORT: CASICHELYDIA emend GAFFNEY & MEYLAN, 1988
MAGANORDER: CRYPTODIRA GAFFNEY & MEYLAN, 1988
SUPERORDER: SELMACRYPTODIRA GAFFNEY, HUTCHISON, JENKINS & MEEKR, 1987
GRANDORDER: DAIOCRYPTODIRA GAFFNEY & MEYLAN, 1988
MICRORDER: BAENOIDEA WILLIAMS, 1960
Family: BAENIDAE Cope, 1882
Cedorbaena putorius
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SOUTH DAKOTAEXCAT LOCATION RESERVED FOR QUALIFIDE WORKERS
MIDDLE PART OF THE HELL CREEK FORMATION
LANCIAN AGE
UPPER MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985
INFRALEGION: DINOSAURIFORMES NOVAS, 1992
SUPERCOHORT: DINOSAURIA OWEN, 1842
COHORT: ORNITHISCHIFORMES COOPER, 1985
MAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: NEORNITHISCHIA COOPER, 1985
GRANDORDER: ORNITHOPODA MARSH, 1871
MICRORDER: MARGINOCEPHALIA SERENO, 1986
ORDER: PACHYCEPHALOSAURIA MARYANSKA & OSMOLSKA, 1974
SUBORDER: DOMOCEPHALINIA SERENO, 1986
INFRAORDER: PACHYCEPHALOSAURIA (MARYANSKA & OSMOLSKA, 1974) COOPER, 1985
Family: PACHYCEPHALOSAURIDAE Sternberg, 1945
Subfamily: PACHYCEPHALOSAURINAE Sternberg, 1945 (sensu Sereno, 1998)
*Dracorex hogwartsia
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NW SOUTH DAKOTA
HELL CREEK FORMATION
LANCIAN AGE
UPPER MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
UPPER UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LISSAMPHIBIA, HAECKEL, 1866?
SUPERORDER: BATRACHIA BRONGNIART, 1800
ORDER: CAUDATA SCOPOLI, 1777
SUBORDER: PORTEOIDEA (NOBEL 1931) EMEND EDWARDS, 1976
Family: BATRACHOSAUROIDIDAE Auffenberg, 1958
Opisthotriton kayi
Prodesmodon copei
SUBORDER: AMBYSTOMATOIDEA NOBLE, 1931
Family: SCAPHERPETONTIDAE Auffenberg & Goin, 1959
Lisserpeton bairdi
Scapherpeton tectum
SUBORDER: SALAMANDROIDEA NOBLE, 1931
Family: SIRENIDAE Gray, 1825
Habrosaurus dilatus
SUPERORDER: SALIENTIA LAURENTI, 1768
ORDER: ANURA RAFINESQUE, 1815
SUBORDER: DISCOGLOSSOIDEI SOKOL, 1977
Family: DISCOGLOSSIDAE Guenther, 1859
Incertae sedis
Scotophryne putulosa
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: CHELONOMORPHA KUHN, 1960
SUPERCOHORT: TESTUDINES LINNAEUS, 1758
COHORT: CASICHELYDIA emend GAFFNEY & MEYLAN, 1988
MAGANORDER: CRYPTODIRA GAFFNEY & MEYLAN, 1988
SUPERORDER: SELMACRYPTODIRA GAFFNEY, HUTCHISON, JENKINS & MEEKR, 1987
GRANDORDER: DAIOCRYPTODIRA GAFFNEY & MEYLAN, 1988
MICRORDER: BAENOIDEA WILLIAMS, 1960
Family: BAENIDAE Cope, 1882
Subfamily: PALATOBAENINAE Gaffney, 1972
Palatobaena bairdi
MICRORDER: CENTROCRYPTODIRA GAFFNEY & MEYLAN, 1988
ORDER: POLYCRPTODIRA GAFFNEY & MEYLAN, 1988
SUBORDER: PROCOELOCRYPTODIRA GAFFNEY & MEYLAN, 1988
INFRAORDER: CHELOMACRYPTODIRA GAFFNEY & MEYLAN, 1988
PARVORDER: TRIONYCHIDA GRAY, 1870
Superfamily: TRIONYCHIDEA Bell, 1828 (sensu Gray, 1870)
Family: NANHSIUNGCHELYIDAE Yeh, 1966
Basilemys sp
Family: TRIONYCHIDAE Bell, 1828
Helopanoplia distincta
*Trionyx davidi
Trionyx spFamily: ADOCIDAE Cope, 1870
Adocus sp
SUBCLASS: DIAPSIDA OSBORN, 1904
INFRACLASS: NEODIAPSIDA BENTON, 1985
LEGION: LEPIDOSAUROMORPHA DUMERIL & BIBRON, 1839
SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)
MAGNORDER: SQUAMATA OPPEL, 1811
SUPERORDER: LACERTILIA OWEN, 1842
GRANDORDER: ASCALABOTA GILMORE, 1928
ORDER: IGUANIA LATREILLE, 1825
SUBORDER: DRACOMORPHA NORTHCUTT, 1978
INFRAORDER: TEIUMORPHA ALIFANOV, 2000
Family: TEIIDAE Gray, 1827
Subfamily: CHAMOPSINAE Denton & O’Neill 1995
Chamops segnis
Leptochamops denticulatus
GRANDORDER: SCINCOGEKKONOMORPHA SUKHANOV, 1961
MICRORDER: SCINCOMORPHA CAMP, 1923
ORDER: ANGUIMORPHA FURBRINGER, 1900
SUBORDER: PLATYNOTA GILMORE, 1928
INFRAORDER: HELODERMOIDA COPE, 1900
Family: HELODERMATIDAE Gray, 1837
Paraderma bogerti
SUBORDER: DIPLOGLOSSA COPE, 1864
INFRAORDER: THECAGLOSSA COPE, 1890
PARVORDER: MONSTERSAURIA NORELL & GAO, 1977
Superfamily: VARANOIDEA Gray, 1827 (sensu Camp, 1923)
Family: PARASANIWIDAE Estes, 1964
Parasaniwa wyomingensis
SUPERORDER: SERPENTES LINNAEUS, 1759
ORDER: OPHIDIA BRONGNIART, 1800
SUBORDER: ALETHINOPHIDIA NOPCSCA, 1923
Superfamily: ANILIODEA Fitzinger, 1826
Family: ANILIIDAE Fitzenger, 1826
Coniophis precedens
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990
COHORT: CROCODYLOTARSI BENTON & CLARK, 1988
MAGNORDER: SUCHIA KREBS, 1974
SUPERORDER: CROCODYLOMORPHA WALKER, 1968
GRANDORDER: CROCODILIFORMES HAY, 1930
MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983
ORDER: EUSUCHIA emend HUXLEY, 1875
Family: BOREALOSUCHIDAE emend BROCHU, 1999
Borealosuchus sp
= Leidyosuchus spINFRAORDER: CROCODYLIA emend GMELIN, 1877
PARVORDER: BREVIROSTRES
Superfamily: ALLIGATORIDEA Buffetaut, 1985
GLOBIDONTA BROUCHU, 1999
Family: ALLIGATORIDAE Gray, 1844
Brachychampsa sp
SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985
INFRALEGION: DINOSAURIFORMES NOVAS, 1992
SUPERCOHORT: DINOSAURIA OWEN, 1842
COHORT: THEROPODA EMEND MARSH, 1881
AVEPODA PAUL, 2002
SUPERORDER: NEOTHEROPODA BAKKER, 1986
GRANDORDER: TETANURAE GAUTHIER, 1986
MICRORDER: COELUROSAURIA HUENE, 1914
ORDER: MANIRAPTORFORMES HOLTZ, 1996
AVETHEROPODA PAUL, 2001
SUBORDER: COELURIA MARSH, 1881
Superfamily: TYRANNOSAUROIDEA Osborn, 1906 (sensu Bonaparte et. al., 1990)
Family: TYRANNOSAURIDAE Osborn, 1906
Subfamily: TYRANNOSAURINAE Osborn, 1906Tribe: TYRANNOSAURINI Osborn, 1906 (sensu Olshevsky, Ford & Yamamoto, 1995)
Nanotyrannus lancensis
= Gorgosaurus lancensis
= Albertosaurus lancensis
= Albertosaurus (Nanotyrannus) lancensisSUBORDER: ORNITHOMIMOSAURIA BARSBOLD, 1976
Family: ORNITHOMIMIDAE Marsh, 1890
Incertae sedis
Gen. sp indet.
AVEPECTORA PAUL, 2001
SUBORDER: MANIRAPTORA GAUTHIER, 1986
INFRAORDER: PARVES SERENO, 1997
PARVORDER: DEINONYCHOSAURIA COLBERT & D. A. RUSSELL, 1969
Incertae sedis
Paronychodon lacustris
Family: DROMAEOSAURIDAE Matthew & Brown, 1922
Subfamily: DROMAEOSAURINAE Matthew & Brown, 1922
Dromaeosaurus albertensis
Family: TROODONTIDAE Gilmore, 1924
Troodon sp
COHORT: ORNITHISCHIFORMES COOPER, 1985
MAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: NEORNITHISCHIA COOPER, 1985
GRANDORDER: ORNITHOPODA MARSH, 1871
MICRORDER: EUORNITHOPODA SERENO, 1986
ORDER: IGUANODONTIA DOLLO, 1888
Family: THESCELOSAURIDAE Sternberg, 1937
Thescelosaurus sp
SUBORDER: ANKYLOPOLLEXIA SERENO, 1986
INFRAORDER: STYRACOSTERNA SERENO, 1986
PARVORDER: HADROSAURIFORMES SERENO, 1997
SUPERFAMILY: HADROSAUROIDEA COPE, 1869 (SENSU SERENO, 1986)
Family: HADROSAURIDAE COPE, 1869
Subfamily: HADROSAURINAE Cope, 1869 (sensu Lambe, 1918)
Tribe: EDMONTOSAURINI Brett-Surman vide Chapman & Brett-Surman, 1990
Edmontosaurus sp
Subfamily: LAMBEOSAURINAE Parks, 1923
Tribe: PARASAUROLOPHINI Brett-Surman vide Chapman & Brett-Surman, 1990
Parasaurolophus sp?
MICRORDER: MARGINOCEPHALIA SERENO, 1986
ORDER: PACHYCEPHALOSAURIA MARYANSKA & OSMOLSKA, 1974
SUBORDER: DOMOCEPHALINIA SERENO, 1986
INFRAORDER: PACHYCEPHALOSAURIA (MARYANSKA & OSMOLSKA, 1974) COOPER, 1985
Family: PACHYCEPHALOSAURIDAE Sternberg, 1945
Gen. sp indet.
ORDER: CERATOPIA MARSH, 1890
SUBORDER: NEOCERATOPIA SERENO, 1986
INFRAORDER: CORONOSAURIA SERENO, 1986
PARVORDER: CERATOPOMORPHA Wolfe & Kirkland, 1998 (emend)
Superfamily: CERATOPOIDEA Marsh, 1888 (sensu Hay, 1902)
Family: CERATOPIDAE Marsh, 1888
Subfamily: CERATOPIINAE Marsh, 1888 (sensu Abel, 1919)
Tribe: TRICERATOPINI nova
Triceratops prorsus
SUPERORDER: EURYOPDA SERENO, 1986
GRANDORDER: ARMATOSAURIA ZHAO, 1983 (emend)
ORDER: ANKYLOSAURIA OSBORN, 1923
SUBORDER: SCELIDOSAURIA COOPER, 1985
INFRAORDER: ANKYLOSAURA OSBORN, 1923
Family: NODOSAURIDAE Marsh, 1890
Palaeoscincus sp
VETEROVATA
_____________________________________________________________________________________OOSUPERCOHORT: DINOSAURIOVUM VIALOV, 1975
OOCOHORT: THEROPODA NOVA
oofamily: ELONGATOOLITHIDAE Zhao, 1975
Gen. sp indet.
= Tyrannosaurus rex?
SOUTH DAKOTA
HELL CREEK FORMATION
LANCIAN AGE
UPPER MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
UPPER UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985
INFRALEGION: DINOSAURIFORMES NOVAS, 1992
SUPERCOHORT: DINOSAURIA OWEN, 1842
COHORT: THEROPODA EMEND MARSH, 1881
AVEPODA PAUL, 2002
SUPERORDER: NEOTHEROPODA BAKKER, 1986
GRANDORDER: TETANURAE GAUTHIER, 1986
MICRORDER: COELUROSAURIA HUENE, 1914
ORDER: MANIRAPTORFORMES HOLTZ, 1996
AVETHEROPODA PAUL, 2001
SUBORDER: COELURIA MARSH, 1881
Superfamily: TYRANNOSAUROIDEA Osborn, 1906 (sensu Bonaparte et. al., 1990)
Family: TYRANNOSAURIDAE Osborn, 1906
Subfamily: TYRANNOSAURINAE Osborn, 1906Tribe: TYRANNOSAURINI Osborn, 1906 (sensu Olshevsky, Ford & Yamamoto, 1995)
Tyrannosaurus rex
COHORT: ORNITHISCHIFORMES COOPER, 1985
MAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: NEORNITHISCHIA COOPER, 1985
GRANDORDER: ORNITHOPODA MARSH, 1871
MICRORDER: MARGINOCEPHALIA SERENO, 1986
ORDER: CERATOPIA MARSH, 1890
SUBORDER: NEOCERATOPIA SERENO, 1986
INFRAORDER: CORONOSAURIA SERENO, 1986
PARVORDER: CERATOPOMORPHA Wolfe & Kirkland, 1998 (emend)
Superfamily: CERATOPOIDEA Marsh, 1888 (sensu Hay, 1902)
Family: CERATOPIDAE Marsh, 1888
Subfamily: CERATOPIINAE Marsh, 1888 (sensu Abel, 1919)
Tribe: TRICERATOPINI nova
Triceratops horridus
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