Mollusca: Class Aplacophora

The class Aplacophora contains about 300 species of wormlike, deepwater marine mollusks formerly classified with the sea cucumbers in Echinodermata. These mollusks lack shells and in many cases a foot as well. Generally small, they burrow in the upper layer of the sea bottom.

The Columbia Electronic Encyclopedia, 6th ed. Copyright 2012, Columbia University Press. All rights reserved.

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