CLARK COUNTY
BELVIDERE
FORT SUPPLY
BLUFF CHALK
KIOWA FORMATION
ALBIAN STAGE
MIDDLE GALLIC SUBEPOCH
UPPER EARLY CRETCEOUS EPOCH
EARLY CRETACEOUS
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.