MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Mon 2 March 2026
Bivalvia | Unionida | Trigonioidoidea | Nakamuranaiadidae | Nippononaia ryosekiana
nominal species Unio (Nippononaia) ryosekiana Suzuki, 1941
Unio (Nippononaia) ryosekiana Suzuki, 1941 = Nippononaia ryosekiana
Suzuki, 1941. Jour. Geol. Soc. Japan 48(575): 412, text figs. 1-3.
Taxonomic Opinions
= Nippononaia ryosekiana (Suzuki) — Haas, 1969: N426, fig. D27:3.
= Unio (Nippononaia) ryosekiana new species — Suzuki, 1941: 412, figs. 1-3.
