ammonites
Chonetinetes reversus Cooper and Grant 1969 (lamp shell)

Strophomenata - Productida - Rugosochonetidae

Full reference: G. A. Cooper and R. E. Grant. 1969. New Permian brachiopods from west Texas. Smithsonian Contributions to Paleobiology 1:1-20

Belongs to Chonetinetes according to G. A. Cooper and R. E. Grant 1969

Sister taxa: Chonetinetes angustisulcatus, Chonetinetes varians

Type specimen: USNM 153193a, a shell (Articulated shell)

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 7.51 x 8.03