UGA Stratigraphy Lab

The data is in the strata

Perisphinctes (Prososphinctes)

Species

Perisphinctes (Prososphinctes)? sp.
Based on one small specimen
Occurrence: Swift Formation of Little Rocky Mountains in Montana
Reference: Imlay, 1982

Specimen Photo

Perisphinctes (Prososphinctes)? sp.
Photograph from Imlay, 1982