Full reference: K.W. Ciriacks. 1963. Permian and Eotriassic bivalves of the middle Rockies. Bulletin of the American Museum of Natural History 125(1):1-100
Sister taxa: none
Type specimen: AMNH 28337, a valve (Left valve). Its type locality is Willow Creek, Lander, Fremont County, which is in a Kungurian marine limestone in the Park City Formation of Wyoming.
Ecology: facultatively mobile infaunal suspension feeder
Average measurements (in mm): shell 33.8 x 21.9, valve length 14.2