vertebrata
 脊椎動物門


 Ver·te·bra·ta /ˌvɝtəˈbrɑtə, ˈbret-/ 名詞 複數
 脊椎動物(有頭類亞門)


 Ver·te·bra·ta n. pl.  Zool. 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.

 ◄ ►


 Vertebrata
      n : fishes; amphibians; reptiles; birds; mammals [syn: {subphylum
          Vertebrata, Craniata, subphylum Craniata]