1. Fishes:
* Bony fish (Osteichthyes)
* Cartilaginous fish (Chondrichthyes)
2. Amphibians:
* Frogs
* Salamanders
* Caecilians
3. Reptiles:
* Lizards
* Snakes
* Turtles
* Crocodiles
4. Birds:
* Passerines (perching birds)
* Non-passerines
5. Mammals:
* Monotremes (egg-laying mammals)
* Marsupials (pouched mammals)
* Placentals (eutherian mammals)