Holotype:

Locality: Sinkhole, SE Iowa.

Horizon:

Biostratigraphy:

Age: Mississipian.

Material: Skull and jaws and a partial mandible (from a higher stratigraphic level).
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Genus: Nova GARCIA, 2003

Holotype:

Locality: Hancock County, Kentucky.

Horizon: Buffalo Wallow Formation.

Biostratigraphy:

Age: Chesterian, Lower Upper Visean Epoch, Middle Mississippian, Lower Carboniferous.

Material: Anterior 2/3 rds of skull and complete skeleton with scales.

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Gen sp to be described.

BOLT, MCKAY, WITZKE & MCADAMS 1988

Holotype:

Locality: Near Delta, south-east Iowa.

Horizon: Upper St. Louis Formation.

Biostratigraphy:

Age: Early Carboniferous.

Material: Skull and fragmentary skeleton.