Commonly Found Marine Mollusks of the Southeastern U.S.

Is your shell a Univalve or Bivalve?

Univalve	Shell with only one part; no hinge or area where another half connects; snail-like shell.
Bivalve	Consists of two halves connecting at a hinge although only one half is usually found; shell is not spiraled; clam-like shell

The Dichotomous Key is also available to use at home or in the field.
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The Dichotomous Key is available .pdf file.
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