The ancestral species in all three cladogram are:
- Sharks
- Ray-fined fishes
- Amphibians
- Turtles
- Lizards
- Snakes
- Crocodiles
- Birds
- Mammals
In Class Reptilia: Not a Clade Cladogram – Turtles, Lizards, Snakes, and Crocodile species are highlighted.
In Clade Reptilia Cladorgram – Turtles, Lizards, Snakes, Crocodile, and Birds species are highlighted.
In Clade Aves Cladogram – Bird species is highlighted.