EAST-CENTRAL UTAH

NORTH OF ARCHES NATIONAL PARK

STIKES QUARRY

YELLOW CAT MEMBER

CEDAR MOUNTAIN FORMATION

BUFFALOGAPIAN AGE

BARREMIAN STAGE

LOWER GALLIC SUBEPOCH

EARLY CRETACEOUS 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: 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

AVEPECTORA PAUL, 2001

SUBORDER: MANIRAPTORA GAUTHIER, 1986

INFRAORDER: PARVES SERENO, 1997

PARVORDER: DEINONYCHOSAURIA COLBERT & D. A. RUSSELL, 1969

Family: DROMAEOSAURIDAE Russell, 1969

Subfamily: DROMAEOSAURINAE Matthew & Brown, 1922

Utahraptor ostrommaysorum

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

PARVORDER: HADROSAURIFORMES SERENO, 1997

Superfamily: IGUANODONTIDEA Cope, 1869 (sensu Sereno, 1986)

Family: IGUANODONTIDAE Cope, 1869

Gen. sp indet.

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UTAH