SOUTH DAKOTA

PENNINGTON COUNTY

BROWN RANCH LOCALITY

SDSM LOCALITY V614

.74 M BELOW THE BASE OF THE 2ND BENTONITE STRINGER

SHARON SPRINGS FORMATION

LOWER PIERRE SHALE GROUP

LOWER CAMPANIAN STAGE

SENONIAN SUBEPOCH

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

SUPERCOHORT: AVEMETATARSALIA BENTON, 1999

COHORT: PROLACERTIFORMES CAMP, 1945 NOVA

SUPERORDER: TAPINOPLATIA PETERS, 2000

GRANDORDER: CHARACIOPODA PETERS, 2000

MICRORDER: FENESTRASAURIA PETERS, 2000

ORDER: PTEROSAURIA KAUP, 1834

SUBORDER: EUPTERODACTYLOIDEA BENNETT, 1994

Superfamily: PTERANODONTIDEA Marsh, 1876

Family: PTERANODONTIDAE Marsh, 1876

Pteranodon longiceps

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SOUTH DAKOTA

PENNINGTON COUNTY

BROWN RANCH

PIERRE SHALE

CAMPANIAN STAGE

SENONIAN SUBEPOCH

UPPER GULF EPOCH

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1903

INFRACLASS: NEODIAPSIDA BENTON, 1985

LEGION: LEPIDOSAUROMORPHA BENTON, 1983

SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)

MAGNORDER: SQUAMATA, OPPEL, 1811

SUPERORDER: LACERTILIA OWEN, 1842

GRANDORDER: SCINCOGEKKONOMORPHA SUKHANOV, 1961

MICRORDER: SCINCOMORPHA CAMP, 1923

ORDER: ANGUIMORPHA FURBRINGER, 1900

SUBORDER: DIPLOGLOSSA COPE, 1864

INFRAORDER: THECAGLOSSA COPE, 1890

PARVORDER: MONSTERSAURIA NORELL & GAO, 1977

Superfamily: VARANOIDEA Gray, 1827 (sensu Camp, 1923)

Family: MOSASAURIDAE Gervais, 1853

Infrafamily: NATANIA

Subfamily: TYLOSAURINAE Williston, 1897

Hainosaurus Nova?

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SOUTH DAKOTA

PENNINGTON COUNTY

SHARON SPRINGS (LOWER) MEMBER)

PIERRE SHALE FORMATION

CAMPANIAN STAGE

SENONIAN SUBEPOCH

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: HESPERORNITHIDAE Marsh, 1872

Subfamily: HESPERORNITHINAE Marsh, 1872

*Hesperornis chowi
*Hesperornis bairdi

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SOUTH DAKOTA

PENNINGTON COUNTY

HILL CITY

NEAR FAITH

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: CHELONOMORPHA KUHN, 1960

SUPERCOHORT: TESTUDINES LINNAEUS, 1758

Incertae sedis

Genus sp indet.

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

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

INFRAORDER: CROCODYLIA emend GMELIN, 1877

Incerate sedis

Gen. sp. indet.

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