UTAH

SAN JUAN COUNTY

VALLEY OF THE GODS

BIRTHDAY BONEBED LOCALITY (CM LOCALITY NO. 3345)

HALGAITO FORMATION

LATE PENNSYLVANIAN (LATE CARBONIFEROUS)-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: DIMETRODONTOMORPHA emend NOPCSA, 1925

Family: SPHENACODONTIDAE Marsh, 1878

Incertae sedis

*Shashajaia bermani

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