Rhynchonellata - Athyridida - Athyrididae

Full reference: G. R. Shi and J.B. Waterhouse. 1996. Lower Permian brachiopods and molluscs from the upper Jungle Creek Formation, northern Yukon Territory, Canada. Geological Survey of Canada Bulletin 424:1-241

Belongs to Composita according to G. R. Shi and J.B. Waterhouse 1996

Sister taxa: Athyris (Composita) indosinensis, Athyris (Composita) semirostrata, Composita advena, Composita affinis, Composita apheles, Composita apsidata, Composita biforma, Composita bucculenta, Composita costata, Composita cracens, Composita crassa, Composita depressa, Composita discina, Composita elongata, Composita emarginata, Composita enormis, Composita grandis, Composita hapsida, Composita huagongensis, Composita idahoensis, Composita imbricata, Composita jogensis, Composita longa, Composita magnicarina, Composita mexicana, Composita minuscula, Composita mira, Composita misriensis, Composita nucella, Composita ovata, Composita parasulcata, Composita pilula, Composita plana, Composita prospera, Composita pyriformis, Composita quadrirotunda, Composita quantilla, Composita rotunda, Composita sigma, Composita stalagmium, Composita strongyle, Composita subcircularis, Composita subquadrata, Composita subtilita, Composita subtriangularis, Composita tareica, Composita tetralobata, Composita tobaensis

Type specimen: GSC 97195. Its type locality is GSC 53703, Section 116H-1A, Peel River, which is in a Sakmarian carbonate dolomite in the Jungle Creek Formation of Canada.

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 23.0 x 25.0