Full reference: T. Kase. 1988. Early Carboniferous (Viséan) gastropods from the Hikoroichi Formation of the Kitakami Mountains, northeast Japan. Transactions and Proceedings of the Palaeontological Society of Japan 149:361-370
Sister taxa: Pseudozygopleura (Stephanozyga) lisaspira, Stephanozyga crassa, Stephanozyga granda, Stephanozyga ignorata, Stephanozyga lisaspira, Stephanozyga magna, Stephanozyga nodosa, Stephanozyga ornamentaria, Stephanozyga subnodosa, Nodozyga rugifera, Nodozyga cylindracea, Nodozyga rowlandsi, Nodozyga longnorensis
Type specimen: Its type locality is Onimarua Quarry, Ofunato City, which is in a Visean carbonate sandstone in the Hikoroichi Formation of Japan
Distribution: found only at Onimarua Quarry, Ofunato City
Specimen images are retrieved through the ePANDDA API.
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