COLORADO
DELTA COUNTY
LITTLE PARK RECREATION AREA
NATURITA FORMATION
"DAKOTA" GROUP
APTAIN STAGE
GALLIC SUBEPOCH
LATE EARLY CRETACEOUS EPOCH
LATE EARLY CRETACEOUS-CENOMANIAN STAGE
LATE GALLIC SUBEPOCH
EARLY GULF EPOCH
MIDDLE CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: NEORNITHISCHIPIDA NOVA
ICHNOGRANDORDER: ORNITHOPODIPDIA NOVA
ICHNOMICRORDER: EUORNITHOPODIPIDA NOVA
ICHNOORDER: IGUANODONTIPIDIA NOVA
ICHNOSUBORDER: ANKYLOPOLLEXIPEDIDA NOVA
ICHNOINFRAORDER: STYRACOSTERNIPIDA NOVA
ICHNOPARVORDER: HADROSAURIFORMIPEDIDA NOVA
Ichnosuperfamily: IGUANODONTIDEA Nova
Ichnofamily: IGUANODONTIPODIDAE emend Vylov, 1988
Caririchnium sp
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COLORADO
DELTA COUNTY
10 KM SW OF DELTA
UCM L 726 (BANNER ROAD 2)
NATURITA FORMATION
EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: EURYOPDIPIDA NOVA
ICHNOGRANDORDER: ANKYLOSAURIFORMIPIDA NOVA
Ichnofamily: TETRAPODOSAURIDAE emend Sternberg, 1932
Tetrapodosaurus borealis
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COLORADO
DELTA COUNTY
10 KM SW OF DELTA
UCM L 733 (CLUB GULCH)
NATURITA FORMATION
EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: EURYOPDIPIDA NOVA
ICHNOGRANDORDER: ANKYLOSAURIFORMIPIDA NOVA
Ichnofamily: TETRAPODOSAURIDAE emend Sternberg, 1932
Tetrapodosaurus borealis
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COLORADO
DELTA COUNTY
10 KM SW OF DELTA
UCM L 745 (ROUBIDEAU CREEK)
NATURITA FORMATION
EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: EURYOPDIPIDA NOVA
ICHNOGRANDORDER: ANKYLOSAURIFORMIPIDA NOVA
Ichnofamily: TETRAPODOSAURIDAE emend Sternberg, 1932
Tetrapodosaurus borealis
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COLORADO
DELTA COUNTY
10 KM SW OF DELTA
UCM UNNUMBERED (SAW MILL MESA)
NATURITA FORMATION
EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: EURYOPDIPIDA NOVA
ICHNOGRANDORDER: ANKYLOSAURIFORMIPIDA NOVA
Ichnofamily: TETRAPODOSAURIDAE emend Sternberg, 1932
Tetrapodosaurus borealis
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COLORADO
DELTA COUNTY
GUNNINSON GORGE NATIONAL CONSERVATION AREA
SUN CLIFF CANYON TRACKSITE
"DAKOTA" GROUP
EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOINFRADIVISION: CROCODYLOTARSIPEDIDII NOVA
ICHNOSUPERORDER: CROCODYLOMORPHIPEDIDA WALKER, 1968
Incertae sedis
*Hatcherichnus isp
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: NEORNITHISCHIPIDA NOVA
ICHNOGRANDORDER: ORNITHOPODIPDIA NOVA
ICHNOMICRORDER: EUORNITHOPODIPIDA NOVA
ICHNOORDER: IGUANODONTIPIDIA NOVA
ICHNOSUBORDER: ANKYLOPOLLEXIPEDIDA NOVA
ICHNOINFRAORDER: STYRACOSTERNIPIDA NOVA
ICHNOPARVORDER: HADROSAURIFORMIPEDIDA NOVA
Ichnosuperfamily: IGUANODONTIDEA Nova
Ichnofamily: IGUANODONTIPODIDAE emend Vylov, 1988
cf. Caririchnium sp
INCHNOCLASS: AVIPEDIA VIALOV, 1966
Incertae sedis
cf. Magnoavipes sp
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COLORADO
DELTA COUNTY
ROUBIDEAU CREEK
NATURITA FORMATION (LOWER
PART OF THE DAKOTA SANDSTONE).
LATE EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: THEROPODIPEDIA NOVA
Incerate sedis
*Ostendichnus bilobatus
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COLORADO
DELTA COUNTY
CLUB GULCH
NATURITA FORMATION (LOWER
PART OF THE DAKOTA SANDSTONE).
LATE EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: THEROPODIPEDIA NOVA
Incerate sedis
Ostendichnus bilobatus
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COLORADO
DELTA COUNTY
CLUB GULCH WEST
NATURITA FORMATION (LOWER
PART OF THE DAKOTA SANDSTONE).
LATE EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: THEROPODIPEDIA NOVA
Incerate sedis
Ostendichnus bilobatus
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COLORADODELTA COUNTY
IN A ROADCUT ON CEDAR MESA
UPPER PART OF THE MANCOS SHALE
UPPER BLUE GATE MEMBER
LOWER 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: RUSSELLOSAURINAE Bell, 1993
Tribe: PLIOPLATECARPINI Dollo, 1884 (sensu Russell, 1967)
*Gnathomortis stadtmani
= Prognathodon stadtmani
COLORADO
DELTA COUNTY
YOUNG LOCALITY MWC-122.1
SALT WASH MEMBER
MORRISON FORMATION
ZONE 2
COMOBLUFFIAN AGE
KIMMERIDGIAN STAGE
UPPERMOST MALM EPOCH
LATE JURASSIC
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, 1903
INFRACLASS: NEODIAPSIDA BENTON, 1985
LEGION: LEPIDOSAUROMORPHA DUMERIL & BIBRON, 1839
SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)
MAGNORDER: SPHENODONTIFORMES Hay, 1930
ORDER: SPHENODONTIA WILLISTON, 1925
Family: EILENODONTIDAE Ramussen & Callison, 1981
Eilenodon sp
SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)
MAGNORDER: SQUAMATA OPPEL, 1811
SUPERORDER: LACERTILIA OWEN, 1842
Incertae sedis
Gen. sp indet.
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
Incertae sedis
Gen. sp indet.
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: MESOSUCHIA EMEND HUXLEY, 1875
PARVORDER: METASUCHIA BENTON & CLARK, 1988
INFRAORDER: METAMESOSUCHIA HULKE, 1878
NEOSUCHIA CLARK, IN BENTON & CLARK, 1988
Family: GONIOPHOLIDIDAE Cope, 1875
Incertae sedis
Goniopholis 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
Family: COELURIDAE Marsh, 1881
Ornitholestes sp
COHORT: ORNITHISCHIFORMES COOPER, 1985
MAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: NEORNITHISCHIA COOPER, 1985
GRANDORDER: ORNITHOPODA MARSH, 1871
MICRORDER: MARGINOCEPHALIA SERENO, 1986
ORDER: HETERODONTOSAURIA COOPER, 1985 (emend)
Family: HETERODONTOSAURIDAE Kuhn, 1966
Echinodon sp
CLASS: AVES LINNAEUS, 1758
Incertae sedis
Gen. sp indet.
CLASS: MAMMALIA LINNAEUS, 1758
SUBCLASS: PROTOTHERIA GILL, 1872
INFRACLASS: TRICONODONTA OSBORN, 1888
ORDER: TRICONODONTIA OSBORN, 1888
Family: TRICONODONTIDAE MARSH, 1887
Incertae sedis
Gen. sp indet.
VETEROVATA
oofamily: Indet.
non Oolithus (Oolithes), O. nanhsiungensis
OORDER: CROCODYLINES NOVA
oofamily: KROKOLITHIDAE Kohring & Hirsch, 1996
Gen. sp indet.
OOSUPERCOHORT: DINOSAURIOVUM VIALOV, 1975
OOCOHORT: THEROPODA NOVA
oofamily: PRISMATOOLITHIDAE Hirsch, 1994
*Preprismatoolithus coloradensis
= Prismatoolithus coloradensis