ILLLINOIS

VERMILION COUNTY

OAKWOOD

ASSELIAN STAGE

ROTLIEGENDES EPOCH

EARLY EARLY PERMIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

NEOTETRAPODA

SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934

Family: Incertae sedis

Non Cricotus heteroclitus

SUBCLASS: LEPOSPONDYLI ZITTEL, 1888

ORDER: NECTRIDEA MIALL, 1875

Family: DIPLOCAULIDAE Cope, 1881

Diplocaulus salamandroides

ORDER: LYSOROPHIA WILLISTON, 1908

Family: COCYTINIDAE Cope, 1875

Incertae sedis

Lysorophus cf. tricarinatus

CLASS: REPTILIA LAURENTI, 1768

Incertae sedis

Gen. sp indet.

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