Full reference: B. S. Kues and R. L. Batten. 2001. Middle Pennsylvanian gastropods from the Flechado Formation, north-central New Mexico. Journal of Paleontology 75(1, supp):1-95
Sister taxa: Pseudozygopleura (Stephanozyga) nishimurai, Stephanozyga granda, Stephanozyga lisaspira, Stephanozyga magna, Stephanozyga nodosa, Stephanozyga subnodosa, Nodozyga rugifera, Nodozyga longnorensis
Type specimen: UNM 7342, a shell. Its type locality is Talpa, which is in a Desmoinesian delta front siliciclastic/sandstone in the Flechado Formation of New Mexico.