OKLAHOMA
TILMAN COUNTY
10 MILES SOUTH AND A LITTLE EAST OF SNYDER
SOUTH SNYDER SITE
CLEAR FORK FORMATION
CLEAR FORK GROUP
ARTINSKIAN STAGE
LOWER ROTLIEGENDES EPOCH
EARLY PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
SUPERORDER: TEMNOSPONDYLIA ZITTEL, 1887
MICROORDER: EUSKELIA YATES & WARREN, 2000
ORDER: EYROPODIA
Superfamily: DISSOROPHOIDEA Boulenger, 1902 (sensu Bolt, 1969)
Family: TREMATOPIDAE Williston, 1910
Acheloma cumminsi
= Trematops milleri
*Acheloma thomasi
= Trematops thomasi