PENNSYLVANIAN

BEAVER COUNTY

MANSFIELD MINE

ROOF SHALE OF UPPER KITTANNING COAL

ALLEGHENY GROUP

UPPER WESTPHALIAN D

MYACHKOVSKIAN STAGE

LOWER UPPER SILESIAN SERIES

UPPER MOSCOVIAN EPOCH

MIDDLE PENNSYLVANIAN (LATE CARBONIFEROUS)

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

SUBCLASS: LEPOSPONDYLI ZITTEL, 1888

ORDER: AISTOPODA MIALL, 1875

Family: OESTOCEPHALIDAE Anderson, 2003

Oestocephalus amphiuminum
= Ophiderpeton amphiuminis

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