Strophomenata - Productida - Productellidae

Alternative combinations: Cathaysia orbicularis, Paryphella obicularia

Full reference: Z. T. Liao. 1980. Upper Permian brachiopods from western Guizhou. Late Permian Stratigraphy and Fossils in Western Guizhou and Eastern Yunnan 241-277

Belongs to Paryphella according to Z. Q. Chen and Z. T. Liao 2009

Sister taxa: Paryphella laohushanensis, Paryphella nasuta, Paryphella sacoformis, Paryphella sparsiplicata, Paryphella sulcatifera, Paryphella transversa, Paryphella triquetra, Paryphella undata

Type specimen: NIGP 43647. Its type locality is Jiaozishan Section Bed 26 (AJ-44), Anshun County, which is in a Changhsingian offshore mudstone in China.

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): valve 7.14 x 11.91