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carapace |
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carapace (kâr`əpās), shield, or shell covering, found over all or part of the anterior dorsal portion of an animal. In lobsters, shrimps, crayfish, and crabs, the carapace is the part of the exoskeleton that covers the head and thorax and protects the dorsal and lateral surfaces. In many crustaceans, the term carapace is also used to describe the hard, protective covering of the cephalothorax, as that of the horseshoe crab. The carapace of a turtle's shell is composed of expanded ribs and vertebrae overlain by dermal plates and horny scales. carapace the thick hard shield, made of chitin or bone, that covers part of the body of crabs, lobsters, tortoises, etc. carapace [′kar·ə‚pās] (geology) The upper normal limb of a fold having an almost horizontal axial plane. (invertebrate zoology) A dorsolateral, chitinous case covering the cephalothorax of many arthropods. (vertebrate zoology) The bony, dorsal part of a turtle shell. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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