ILLINOIS

VERMILION COUNTY

DANVILLE

LOWER CONEMAUGH

STEPHANIAN

UPPER SILESIAN

UPPER KASIMOVIAN TO GZELIAN EPOCH

LATEST PENNSYLVANIAN (LATEST CARBONIFEROUS)

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

LABYRINTHODONTIA OR LEPOSPONDYLI

Incertae sedis

*Proterpeton gurleyi

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