KANSAS
DICKENSON COUNTY
ELMO
PROBABLY CLYDE FORMATION EQUIVALENT
LOWER TO MIDDLE WAGGONER RANCH FORMATION (FORMERLY CLYDE FORMATION, UPPER WICHITA
GROUP)
UPPER WICHITA GROUP
LAND-VERTEBRATE FAUNACHRON LOWER TO MIDDLE C
LOWER LEONARDIAN STAGE
UPPER ROTLIEGENDES EPOCH
EARLY PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: SYNAPSIDA OSBORN, 1903
ORDER: PELYCOSAURIA COPE, 1878
SUBORDER: EUPELYCOSAURIA KEMP, 1982
INFRAORDER: EDAPHOSAURA NOVA
Family: EDAPHOSAURIDAE Cope, 1882
Edaphosaurus cruciger
= Dimetrodon cruciger
= Naosaurus cruciger
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