COLORADO
EAGLE BASIN
DERBY JUNCTION LOCALITY N OF DOTSERO
MAIN ELK CREEK LOCALITY
EQUIVALENT TO THE PETRIFIED FOREST FORMATION
CHINLE GROUP
CARNIAN-LOWER NORIAN STAGE
LATE TRIASSIC EPOCH
LATE TRIASSIC
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: PSEUDOSUCHIA ZITTEL 1887-1890
Incertae sedis
Gen. sp indet.
GRANDORDER: RAUISUCHIFORMES PARRISH, 1993
ORDER: AETOSAURIA NICHOLSON & LYDEKKER, 1889
Family: STAGONOLEPIDIDAE Lydekker, 1887
Subfamily: AETOSAURINAE Cope, 1889 (sensu Heckert & Lucas, 2000)
Aetosaurus sp
Subfamily: DESMATOSUCHINAE Huene, 1942
Paratypothorax sp
SUPERORDER: CROCODYLOMORPHA WALKER, 1968
ORDER: INCERTAE SEDIS
SUBORDER: SPHENOSUCHIA BONAPARTE, 1971
Family: SPHENOSUCHIDAE Huene, 1922
cf. Hesperosuchus