(Phylum: Chordata)

Consisting of the 5 or 7 classes, depending on the authority: mammals, birds, reptiles, amphibians, jawless fish, cartilaginous fish and bony fish (with some combining fish into a single class), each characterised by the presence of a notochord or backbone (vertebral column).

Pin It on Pinterest

Share This

Share this Page...

If you found this page useful, please share it with your friends