HONSHU ISLAND
YAMAGUCHI PREFECTURE
TOYOTA TOWN
NEAR THE ERAGAWA RIVER
NM MEMBER
NISHINAKAYAMA FORMATION
TOYORA GROUP
LOWER TORACIAN
WHITBIAN SUBSTAGE
LIASSIC
EARLY JURASSIC
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: CHELONOMORPHA KUHN, 1960
SUPERCOHORT: TESTUDINES LINNAEUS, 1758
Incertae sedis
Genus sp indet.
SUBCLASS: DIAPSIDA OSBORN, 1903
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: MESOSUCHIA EMEND HUXLEY, 1875
PARVORDER: METASUCHIA BENTON & CLARK, 1988
INFRAORDER: METAMESOSUCHIA HULKE, 1878
NEOSUCHIA CLARK, IN BENTON & CLARK, 1988
Family: ATOPOSAURIDAE Gervais, 1871
Gen. sp indet.