BASKIR PROVINCE
DEMA RIVER
SANTAGULOV MINE
ZONE I
EARLY PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: SYNAPSIDA OSBORN, 1903
ORDER: PELYCOSAURIA COPE, 1878
SUBORDER: CASEASAURIA WILLISTON, 1912
Family: CASEIDAE Williston, 1912
Incertae sedis
*Phreatophasma aenigmaticum