Trilobita - Ptychopariida - Alokistocaridae

Full reference: C. E. Resser. 1939. The Spence Shale and its fauna. Smithsonian Miscellaneous Collections 97(12):1-29

Belongs to Clappaspis according to C. E. Resser 1939

Sister taxa: Ehmaniella casta, Ehmaniella similis, Clappaspis spencei, Clappaspis idahoensis, Clappaspis lanata, Clappaspis coriacea

Type specimen: USNM 96534

Ecology: fast-moving epifaunal detritivore