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}]
more about vertebrata
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