ILLINOIS

WILL COUNTY

WILMINGTON TOWNSHIP

SLOPE OF A COAL MINE DUMP

LOWER CARBONDALE FORMATION

FRANCES CREEK SHALE

WESTPHALIAN D

LOWER UPPER SILESIAN SERIES

DESMONIENSEAN

MYACHKOVSKIAN STAGE

UPPER MOSCOVIAN EPOCH

LATE PENNSYLVANIAN (LATE CARBONIFEROUS)

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

SUBCLASS: LEPOSPONDYLI ZITTEL, 1888

ORDER: AISTOPODA MIALL, 1875

Family: PHLEGETHONTIDAE Cope, 1875

*Pseudophlegethontia turnbullorum
= Aornerepton mazonensis (partim)
= Phlegethontia mazonensis