SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

ORDER: PELYCOSAURIA COPE, 1878

SUBORDER: EUPELYCOSAURIA KEMP, 1982

INFRAORDER: OPHIACHODONTIA NOVA

Family: OPHIACODONTIDAE Nopsca, 1923

Clepsydrops collettii
= *Clepsydrops pedunculatus
= *Archaeobelus vellicatus

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SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

ORDER: PELYCOSAURIA COPE, 1878

SUBORDER: EUPELYCOSAURIA KEMP, 1982

INFRAORDER: OPHIACHODONTIA NOVA

Family: OPHIACODONTIDAE Nopsca, 1923

Clepsydrops vinslovii
= ?*Captorhinus illinoisensis

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

ORDER: PELYCOSAURIA COPE, 1878

SUBORDER: EUPELYCOSAURIA KEMP, 1982

INFRAORDER: OPHIACHODONTIA NOVA

Family: OPHIACODONTIDAE Nopsca, 1923

Clepsydrops sp

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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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ILLINOIS

VERMILION COUNTY

DANVILLE BONE BED

LOWER CONEMAUGH

LATE PENNSYLVANIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: AMPHIBIA LINNAEUS, 1758

NEOTETRAPODA

SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934

Family: Incertae sedis

Non *Cricotus heteroclitus
= *Cricotus gibsoni
= *Cricotus discophorus

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ILLINOIS

VERMILLION COUNTY

DANVILLE

HORSESHOE BEND OF VERMILLION RIVER

"CLEPSYDROPS SHALES"

MIDDLE MCLEANSBORO FORMATION

CONEMAOUGH GROUP

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: DIPLOCAULIDAE Cope, 1881

*Diplocaulus salamandroides

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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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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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ILLINOIS

VERMILION COUNTY

VERMILLION RIVER

MCLEANSBORO FORMATION

LATE PENNSYLVANIAN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

ORDER: PELYCOSAURIA COPE, 1878

SUBORDER: EUPELYCOSAURIA KEMP, 1982

INFRAORDER: OPHIACHODONTIA NOVA

Family: OPHIACODONTIDAE Nopsca, 1923

*Clepsydrops collettii
*Clepsydrops vinslovii

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