ILLINOIS

VERMILLION COUNTY

2 MILES SOUTH OF OAKWOOD

NORTH BANK OF SALT FORK AT THE TIP OF HORSESHOE BEND OF VERMILLION RIVER

MODESTO FORMATION

MIDDLE MCLEANSBORO GROUP

EARLY CONEMAUGH

WOLFCAMPANIAN

SAKMARIAN STAGE

UPPER LOWER TO LOWER MIDDLE ROTLIEGENDES EPOCH

EARLY PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

SUBCLASS: LEPOSPONDYLI ZITTEL, 1888

ORDER: LYSOROPHIA WILLISTON, 1908

Family: COCYTINIDAE Cope, 1875

Incertae sedis

*Lysorophus tricarinatus

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