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iNat·51903FamilyMollusca145,697 field observations
  1. Animals
  2. ›Molluscs
  3. ›Bivalves
  4. ›Autobranchia
  5. ›Heteroconchia
  6. ›Freshwater Mussels and Brooch Clams
  7. ›Freshwater Mussels
  8. ›Unionoidea
River Mussels
Plate 1 of 10. U.S. Fish and Wildlife Service Northeast Region, no known copyright restrictions (public domain) · via iNaturalist

River Mussels

Unionidae

The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or simply as unionids.

The range of distribution for this family is world-wide. It is at its most diverse in North America, with about 297 recognised taxa, but China and Southeast Asia also support very diverse faunas.

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.

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In the stacks

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Every page naming Unionidae in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 51903.