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vertebrata |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Vertebrata \Ver`te*bra"ta\, n. pl [NL.] (Zo["o]l.) One of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or cartilaginous vertebr[ae], together with Amphioxus in which the backbone is represented by a simple undivided notochord. The Vertebrata always have a dorsal, or neural, cavity above the notochord or backbone, and a ventral, or visceral, cavity below it The subdivisions or classes of Vertebrata are Mammalia, Aves, Reptilia, Amphibia, Pisces, Marsipobranchia, and Leptocardia. From WordNet r 1.6 [wn]: Vertebrata n : fishes; amphibians; reptiles; birds; mammals [syn: {Vertebrata}, {subphylum Vertebrata}, {Craniata}, {subphylum Craniata}]
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