Freshwater Mussel

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“The fresh-water mussel...the inside of the shell (left valve)...u., The umbo; L., the ligament; c.t., lateral teeth; a.a., anterior adductor mark; a.r., mark of protractor of the foot; p.l., pallial line; p.a., posterior adductor mark; p.r., mark of posterior retractor of the foot; A., anterior (the blunter end); P., posterior.” -Thomson, 1916

Keywords

umbo, freshwater mussel, label mussel parts, bivalve shell, inside of mussel shell, left valve

Galleries

Clams and Other Bivalves

Source

J. Arthur Thomson, M.A., LL.D. Outlines of Zoology (New York, NY: D. Appleton & Company, 1916)

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