†Chonetinetes varians Cooper and Grant 1975 (lamp shell)
Strophomenata - Productida - Rugosochonetidae
Full reference: G. A. Cooper and R. E. Grant. 1975. Permian Brachiopods of West Texas, III. Smithsonian Contributions to Paleobiology 19:795-1921
Belongs to Chonetinetes according to P.R. Hoover 1981
Sister taxa: Chonetinetes angustisulcatus, Chonetinetes reversus
Type specimen: USNM 153677a, a shell (Articulated shell)
Ecology: stationary low-level epifaunal suspension feeder
Average measurements (in mm): shell 5.77 x 7.51, valve 6.04 x 10.04