SOUTHEASTERN COLORADO

OTERO COUNTY

COMANACHE NATIONAL GRASSLANDS

UPPER PORTION OF JUANA LOPEZ MEMBER

PRIONOCYCLUS WYOMINGENSIS AND SCAPHITES WHITFIELD ZONES

CARLILE SHALE

LATEST MIDDLE TURONIAN STAGE

LATE GALLIC SUPEPOCH

EARLY GULF EPOCH

MIDDLE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Superfamily: ELASMOSAUROIDEA Cope, 1869

Family: ELASMOSAURIDAE Cope, 1869

Gen. sp indet.

 

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SOUTHEASTERN COLORADO

OTERO COUNTY

PURGATOIRE RIVER VALLEY

LAST CHANCE QUARRY

MEMBER?

MORRISON FORMATION

ZONE?

COMOBLUFFIAN AGE

KIMMERIDGIAN STAGE

UPPERMOST MALM EPOCH

LATE JURASSIC

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

SUPERORDER: SAUROPODOMORPHA HUENE, 1932

GRANDORDER: BRONTOSAURIA OLSHEVSKY, 1991 (emend)

MICRORDER: SAUROPODA MARSH, 1878

Incertae sedis

Gen. Sp indet.

ORDER: EUSAUROPODA

SUBORDER: NEOSAUROPODA BONAPARTE, 1986

Family: CAMARASAURIDAE Cope, 1877

Subfamily: CAMARASAURINAE Cope, 1877 (sensu Nopcsa, 1928)

Camarasaurus sp

INFRAORDER: HOMALOSAUROPIA JANENSCH, 1929

PARVORDER: DIPLODOCIMORPHA CALVO & SALGADO, 1995

Superfamily: DIPLODOCOIDEA Marsh, 1884 (sensu Upchurch, 1995)

Family: DIPLODOCIDAE Marsh, 1884

Apatosaurus sp


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