- 1. n. pl. One of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or cartilaginous vertebrae, 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. Source: opted
- 2. One of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or cartilaginous vertebræ, 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. Source: webster
- 3. One of the grand divisions of the animal kingdom, comprisingall animals that have a backbone composed of bony or cartilaginousvertebræ, together with Amphioxus in which the backbone isrepresented by a simple undivided notochord. The Vertebrata alwayshave a dorsal, or neural, cavity above the notochord or backbone, anda ventral, or visceral, cavity below it. The subdivisions or classesof Vertebrata are Mammalia, Aves, Reptilia, Amphibia, Pisces,Marsipobranchia, and Leptocardia. Source: adambom
- 4. n fishes; amphibians; reptiles; birds; mammals Source: ecdict
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backbonecavitynotochordaboveamphibiaamphioxusanimalanimalsavesbelowbonycomposeddivisionsdorsalgrandkingdomleptocardiamammaliamarsipobranchianeuralpiscesreptiliasimplesubdivisions
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