Rhynchonellata - Spiriferinida - Pennospiriferinidae

PaleoDB taxon number: 127960

Full reference: G. A. Cooper and R. E. Grant. 1976. Permian Brachiopods of west Texas, V. Smithsonian Contributions to Paleobiology 24:2609-3159

Belongs to Arionthia according to J. I. Tazawa 2012

Sister taxa: Arionthia alata, Arionthia blothrhachis, Arionthia germana, Arionthia polypleura

Type specimen: USNM 154707a, a shell (Articulated shell)

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 11.1 x 17.7, valve 16.9 x 26.1