MUSSELpdb | nomainal sp. Pisidium obtusale var. fragile Westerlund, 1873

	Home \| About \| Database \| Mussel of the Month \| Publications & Presentations


MUSSELpdb
	Introduction Browse d'basing


Taxonomy
	all genera Unionidae Margaritiferidae Hyriidae Etheriidae Mycetopodidae Iridinidae Species & Genus Richness by Taxonomy


Geography
	Summary North America Central America South America Afrotropics North Eurasia East Asia Australasia Species Richness & Endemism by Geography

Page last updated
Thu 17 July 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

Bivalvia | ... | Sphaeriidae | Sphaeriinae | Euglesa ventricosa

nominal species Pisidium obtusale var. fragile Westerlund, 1873

Clessin in Westerlund, 1873. Fauna Moll. Terr. Fluv. Suec. Norv. Dan. (2): 548.
Clessin, 1877. Deutsche Excurs. Moll. Fauna: 520.
(intro'd as intra-sp. of Pisidium obtusale Pfeiffer, 1821)

= Euglesa ventricosa

Taxonomic Opinions

= Pisidium (Gruppe Fossarina) obtusale var. fragile Clessin — Clessin, 1877

"Making the world a better place, one mollusk at a time."
	The MUSSEL Project — Home Page http://www.mussel-project.net/. Site developed and maintained by Dan Graf & Kevin Cummings. Funded by The National Science Foundation.