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
Fri 13 February 2026
Bivalvia | Venerida | Cyrenoidea | Cyrenoididae | Polymesoda
species Polymesoda placens (Hanley, 1844): synonymy
Synonymy
Cyrena placens Hanley, 1844
Hanley, 1844. Proc. Zool. Soc. London 1844: 160.
Hanley, 1856. Illustr. Descr. Cat. Rec. Bivalve Shells: 352, pl. 14, fig. 52.
Polymesoda (s.s.) placens — Martens (1900)
Cyanocyclas placens — Simone (2006)
Taxonomic History (since 1900)
Polymesoda (s.s.) placens — Martens (1900)
Cyanocyclas placens — Simone (2006)
