Gastropoda - Prosobranchia - Orthonematidae

Full reference: A. Nützel. 2012. Systematic palaeontology, in Permian (Capitanian) gastropods from the Akasaka Limestone (Gifu Prefecture, Japan). Journal of Systematic Palaeontology 10:103-169

Belongs to Yochelsonistylus according to A. Nützel 2012

Sister taxon: Yochelsonistylus seussae

Type specimen: AMF-KG-218. Its type locality is Ichihashi Quarry, Kinshozan, Akasaka, which is in a Capitanian shallow subtidal packstone in the Akasaka Formation of Japan.

Ecology: epifaunal

Average measurements (in mm): shell diameter 4.18