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During evolution the animal kingdom split into two important teams: the invertebrates and the vertebrates. The spinal wire runs alongside the body between the caudal and cranial regions connecting to the nerve tissues Vertebrates have other organs just like the respiratory system, sensory organ, systematic digestive system, nicely developed and an advanced nervous system too.Vertibrates

This type of structure will be seen in primitive animals such as the lancet, coelacanth, and even the trendy dogfish. 2. belonging or pertaining to the Vertebrata, a subphylum of chordate animals having an internal skeleton of bone or cartilage that includes a braincase and a spinal column, and comprising mammals, birds, reptiles, amphibians, and fishes.Vertibrates

The remainder of the vertebrate species are tetrapods, a singl...