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
Wed 04 February 2026
Bivalvia | Sphaeriida | Sphaerioidea | Sphaeriidae | Sphaeriinae | Pisidium observationis
nominal species Pisidium observationis Pilsbry, 1911
Pisidium observationis Pilsbry, 1911 = Pisidium observationis
Pilsbry, 1911. Rep. Princeton Univ. Exp. Patagonia 3(5): 608, fig. 19.
Taxonomic Opinions
= Pisidium observationis Pilsbry, 1911 — IUCN, 2011
= Pisidium observationis Pilsbry, 1911 — Bogan, 2010
= Pisidium observationis Pilsbry, 1911 — Rumi et al., 2008
+ Pisidium magellanicum (Dall) — Ituarte, 2007
= Pisidium observationis (Pilsbry, 1911) — Simone, 2006
