Stromboidea
Locus typicus: Hiraiga, Tanohata - mura, Iwate Prefecture, Japan
- Holotype: UMUT MM15615, Paratypes: UMUT MM15616 - 15618
- Reference: Kase, 1984 - Early Cretaceous Marine and Brackish - water Gastropoda from Japan, Nat. Sci. Mus., Tokyo, p. 145, pl. 22, fig. 9
