Vertebrata

noun plural

Ver·​te·​bra·​ta ˌvər-tə-ˈbrät-ə  -ˈbrāt- 

: a subphylum of chordates comprising animals (such as mammals, birds, reptiles, amphibians, and fishes) with a segmented spinal column together with a few primitive forms in which the backbone is represented by a notochord