WHEATLAND COUNTY
CARELESS CREEK QUARRY
JUDITH RIVER FORMATION
JUDITHAN AGE
MIDDLE CAMPANIAN STAGE
MIDDLE 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
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 spINFRAORDER: CROCODYLIA emend GMELIN, 1877
PARVORDER: BREVIROSTRES
Superfamily: ALLIGATORIDEA Buffetaut, 1985
GLOBIDONTA BROUCHU, 1999
Family: ALLIGATORIDAE Gray, 1844
Brachychampsa sp