COLORADO
UINTA BASIN
DOUGLAS CREEK ARCH AND WESTERN PIECEANCE CREEK BASIN
WILLIAMS FORK FORMATION
JUDITHIAN AGE
CAMPANIAN STAGE
SENONIAN SUBEPOCH
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
Incertae sedis
Gen. sp indet.
SUPERORDER: SALIENTIA LAURENTI, 1768
Incertae sedis
Gen. sp indet.
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NW COLORADO
WILLIAMS FORK FORMATION
JUDITHIAN AGE
CAMPANIAN STAGE
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: 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: CHASMOSAURINI Lambe, 1915
Pentaceratops sp
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COLORADO
PICEANCE CREEK BASIN
WILLIAMS FORK FORMATION
JUDITHIAN AGE
CAMPANIAN STAGE
SENONIAN SUBEPOCH
UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA
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
Family: BOREALOSUCHIDAE emend BROCHU, 1999
Borealosuchus sp
= Leidyosuchus sp
INFRAORDER: CROCODYLIA emend GMELIN, 1877
Family: GAVIALIDAE Cuvier, 1807
Subfamily: THORACOSAURINAE Cope, 1875 (sensu Nopcsa, 1928)
Incertae sedis
Thoracosaurus sp
PARVORDER: BREVIROSTRES
Superfamily: ALLIGATORIDEA Gray, 1844 ( sensu Buffetaut, 1985)
GLOBIDONTA BROUCHU, 1999
Family: ALLIGATORIDAE Gray, 1844
Brachychampsa sp
CLASS: MAMMALIA LINNAEUS, 1758
SUBCLASS: THERIIFORMES (ROWE, 1988) McKENNA & BELL, 1997
INFRACLASS: ALLOTHERIA (MARSH, 1880) McKENNA & BELL, 1997
ORDER: MULTITUBERCULATA COPE, 1884
SUBORDER: CIMOLODONTA McKENNA, 1975
Incertae sedis
Paracimexomys sp
Superfamily: PTILODONTOIDEA Cope, 1887 (sensu McKenna & Bell, 1997)
Family: CIMOLODONTIDAE Marsh, 1889
Cimolodon sp
Superfamily: Incertae sedis
Family: CIMOLOMYIDAE Marsh, 1889
Cimolomys sp
Family: TAENIOLABIDIDAE Granger & Simpson, 1929
Meniscoessus nova
Family: Incertae sedis
New genus and species No 1, Cimolomys-like
New genus and species No 2, Plagiulacid or Microcosmodontine Euscosmodontid
New genus and species
SUBCLASS: PROTOTHERIA GILL, 1872
INFRACLASS: TRECHNOTHERIA McKENNA, 1975
LEGION: CLADOTHERIA McKENNA, 1975
SUBLEGION: ZATHERIA MCKENNA, 1975
INFRALEGION: TRIBOSPHENIDA (McKENNA, 1975) McKENNA & BELL, 1997
SUPERCOHORT: THERIA (PARKER & HASWELL, 1987) McKENNA & BELL, 1997
Incertae sedis
Gen. sp indet.
COHORT: MARSUPIALIA (ILLIGER, 1811) McKENNA & BELL, 1997
ORDER: STAGODONTIA ARCHER, 1984
Family: PEDIOMYIDAE Simpson, 1927
Pediomys clemensi
Pediomys sp
ORDER: DIDELPHIMORPHIA GILL, 1872
Family: DIDELPHIDAE Gray 1821
Subfamily: ALPHADONTIDAE Marshall, Case & Woodburne, 1990
Alphadon sahni
Alphadon sp
COLORADO
NEAR DENVER
“CERATOPS BEDS”
JUDITH RIVER FORMATION
JUDITHIAN AGE
CAMPANIAN STAGE
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: 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: TRIONYCHIDAE Bell, 1828
Aspideretes beecheri
COLORADO
GRAND MESA COAL FIELD
NEAR GRAND MESA
"MESAVERDE" FORMATION
JUDITHIAN AGE
CAMPANIAN STAGE
SENONIAN SUBEPOCH
UPPER GULF 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
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: HADROSAUROIDIPEDIA NOVA
Ichnofamily: HADROSAURIOPDIDAE Vylov, 1988
Gen. sp indet.