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chordate |
Also found in: Medical, Wikipedia, Hutchinson | 0.03 sec. |
chordateAny member of the phylum Chordata, which includes the most highly evolved animals, the vertebrates, as well as the marine invertebrate cephalochordates (see amphioxus) and tunicates. All chordates, at some time in their life cycle, possess a dorsal supporting rod (notochord), gill slits, and a dorsal nerve cord. Unlike vertebrates, tunicates and cephalochordates lack any kind of brain or skeleton. Chordate bodies consist of a body wall encasing a gut, with a space between called the coelom. The body is usually long and bilaterally symmetrical, with the mouth and sense organs at the front end. chordate any animal of the phylum Chordata, including the vertebrates and protochordates, characterized by a notochord, dorsal tubular nerve cord, and pharyngeal gill slits 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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