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Decapoda

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Decapoda

1. (Science: zoology) The order of crustacea which includes the shrimps, lobsters, crabs, etc.

They have a carapace, covering and uniting the somites of the head and thorax and inclosing a gill chamber on each side, and usually have five (rarely six) pairs of legs. They are divided into two principal groups: Brachyura and Macrura. Some writers recognize a third (Anomura) intermediate between the others.

2. (Science: zoology) a division of the dibranchiate cephalopods including the cuttlefishes and squids. See Decacera.

Origin: NL, fr. Gr. Ten _, foot.