Bivalvia - Pectinida - Heteropectinidae

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

Belongs to Eumorphotis according to K.W. Ciriacks 1963

Sister taxa: Eumorphotis bokharica, Eumorphotis ericius, Eumorphotis huancangensis, Eumorphotis inaequicostata, Eumorphotis inaequicostatus, Eumorphotis lorigae, Eumorphotis multiformis, Eumorphotis nationalis, Eumorphotis shajingengi, Eumorphotis spicata, Eumorphotis telleri, Eumorphotis venetiana, Eumorphotis virginensis, Pseudomonotis (Eumorphotis) nodulata

Type specimen: MCZ 15664. Its type locality is Frying Pan Gulch, Beaverhead County, which is in a Griesbachian marine mixed carbonate-siliciclastic in the Dinwoody Formation of Montana.

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): valve length 21.6