Is your shell a Univalve or Bivalve?
Shell with only one part; no hinge or area where another half connects; snail-like shell.
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.
Click here to download a copy.

The Dichotomous Key is available .pdf file.
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