SOUTH DAKOTA
CUSTER COUNTY
BUFFALO GAP
CALICO CANYON
LAKOTA FORMATION
BARREMIAN STAGE
LOWER GALLIC SUBEPOCH
GULF EPOCH
EARLY 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: EUORNITHOPODA SERENO, 1986
ORDER: IGUANODONTIA DOLLO, 1888
SUBORDER: ANKYLOPOLLEXIA SERENO, 1986
INFRAORDER: STYRACOSTERNA SERENO, 1986
Incertae sedis
Osmakasaurus depresus
= *Camptosaurus? depressusSUPERORDER: EURYOPDA SERENO, 1986
GRANDORDER: ARMATOSAURIA ZHAO, 1983 (emend)
ORDER: ANKYLOSAURIA OSBORN, 1923
SUBORDER: SCELIDOSAURIA COOPER, 1985
INFRAORDER: ANKYLOSAURA OSBORN, 1923
Family: POLACANTHIDAE Weiland, 1911
*Hoplitosaurus marshi
= Stegosaurus marshi
= Polacanthus marshi
_____________________________________________________________________________________
SOUTH DAKOTA
CUSTER COUNTY
5 MILES BY ROAD AND 2 3/4 MILES IN A STRAIGHT LINE S. 60?W OF HERMOSA
GRACE COOLIDGE CREEK SITE (FORMERLY SQUAW CREEK)
LAKOTA SANDSTONE
BARREMIAN-LOWER APTIAN STAGE
LOWER GALLIC SUBEPOCH
MIDDLE EARLY CRETACEOUS EPOCH
LATE CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOSUPERCOHORT: AVEMETATARSALIPEDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
Incertae sedis
Ichnofamily: ATREIPODIDAE emend Olsen & Baird, 1986
Atreipus sp
____________________________________________________________________________________