Lingulata - Acrotretida - Acrotretidae

Full reference: C. E. Resser. 1938. Middle Cambrian fossils from Pend Oreille Lake, Idaho. Smithsonian Miscellaneous Collections 97(3):1-12

Belongs to Acrotreta according to C. E. Resser 1938

Sister taxa: Acrotreta definita, Acrotreta levata

Type specimen: USNM 95024. Its type locality is Locality 37n (Pend Oreille Lake), which is in a Cambrian carbonate limestone/shale in the Lakeview Formation of Idaho.

Ecology: stationary epifaunal suspension feeder