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Winged floater

Species of bivalve From Wikipedia, the free encyclopedia

The winged floater (Anodonta nuttalliana) is a species of freshwater mussel, an aquatic bivalve mollusk.

Phylum:Mollusca
Class:Bivalvia
Order:Unionida
Family:Unionidae
Quick facts Conservation status, Scientific classification ...
Winged floater
Imperiled
Imperiled (NatureServe)[2]
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionida
Family: Unionidae
Genus: Anodonta
Species:
A. nuttalliana
Binomial name
Anodonta nuttalliana
Lea 1838
Synonyms[3]
  • Anodonta idahoensis (Hemphill, 1891)
  • Anodonta marginata wahlamatensis I. Lea, 1838
  • Anodonta nuttaliana (misspelling)
  • Anodonta nuttalliana idahoensis Hemphill, 1891
  • Anodonta rotundovata Trask, 1855
  • Anodonta triangularis Trask, 1855
  • Anodonta wahlamatensis I. Lea, 1838
  • Anodonta wahlametensis I. Lea, 1838
  • Margarita (Anodonta) nuttalliana (I. Lea, 1838)
  • Margarita (Anodonta) wahlamatensis (I. Lea, 1838)
  • Margaron (Anodonta) nuttalliana (I. Lea, 1838)
  • Margaron (Anodonta) wahlamatensis (I. Lea, 1838)
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Taxonomy

The species was first described in 1838 by Isaac Lea, along with two similar-looking shells from one location in the lower Willamette River: A. oregonensis (Oregon floater) and A. wahlamatensis (Willamette floater).[4] The latter is currently treated as synonymous with A. nuttalliana.[3]

Description

The shell of the winged floater is quite thin, and elliptical or ovate, with the back dorsal showing the prominent "wing" shape. The nacre has white or blue-tinged tone. Individuals may reach a size of up to 4.25 inches (10.8 cm).[4]

Distribution and habitat

The winged floater lives buried in the sandy or muddy bottom of lakes and rivers, most frequently at low elevations. The species occurs in California, Oregon, Washington, and the southern parts of British Columbia. Historical records from Utah are of uncertain status.[4]

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