Vertebrae
These creatures are the backbone or spinal cord.
Vertebrate creatures began to evolve over a period of about 505 million years.
An animal is most well known as well (except insects).
Fish, amphibians Reptiles, birds and mammals. (Including humans) are species of vertebrates.
The spinal vertebrae are in a line along the back of the animal.
As well as the spine is flexible movement.
Have helped to shape the body into shape, and also protects the nerves as well. Vertebrate species Scientists are divided into 5 they are.
Fish species
Amphibian
reptile
poultry
Mammal