Publisher's Synopsis
Excerpt from Observations on the Genus Unio, Vol. 6: Together With Descriptions of New Species in the Family Unionidae; Read Before the Academy of Natural Sciences of Philadelphia and Published in Their Journal; Part I, 1857
Shell winged, smooth, subrotund, somewhat in?ated and very inequilateral valves thick; beaks rather prominent and angular; epidermis yellowish brown; cardinal teeth thick, crenulate and elevated; lateral teeth long, thick and somewhat curved.
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