The animals that have a true vertebral column and an internal skeleton are called vertebrates.
Vertebrates
Invertebrates
Vertebrates have a true vertebral column and an internal skeleton. Vertebrates include fishes, amphibians, reptiles, birds and mammals.
some chordate animals are called vertebrates and some are called invertebrates? why ?
Invertebrates have a backbone called the vertebral column.
The animals that have a true vertebral column or a notochord are called ___.