WILL COUNTY

FORMER PEABODY COMPANY STRIP MINE

PIT 11

CARBONDALE FORMATION

FRANCES CREEK SHALE

MAZON CREEK BIOTA

WESTPHALIAN D

LOWER UPPER SILESIAN

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: NECTRIDEA MIALL, 1875

Family: UROCORDYLIDAE Lydekker, 1889

Subfamily: UROCORDYLINAE Lydekker, 1889 (sensu Carroll, Bossy, Milner, Andrews & Wellstead, 1998)

Ctenerpeton sp

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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