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
Publication Say (1822): summary
Full Citation
Say, T. 1822. Description of univalve terrestrial and fluviatile shells of the United States. Journal of the Academy of Natural Sciences 2: 370-381. Available electronically.
Attributed Nominal Species
Cyclas partumeia Say, 1822 = Sphaerium partumeium
Say, 1822. Jour. Acad. Nat. Sci. 2: 380.
Cyclas rhomboidea Say, 1822 = Sphaerium rhomboideum
Say, 1822. Jour. Acad. Nat. Sci. 2: 380.
