The Vertebrate Chordates is divided into five groups.This includes:
1) Pisces : all the fishes.
2)Amphibians : Frog, toad, salamandra.
3)Reptilia : Snakes, crocodiles, tortoise.
4) Aves: peacock, crow, owl.
5)Mammalia: Prototheria - Duck-billed platypus.
Metatheria - kangaroo
Eutheria - human beings.
hope it helps.. :))
