Superclass Agnatha**
Class Myxini
Class Cephalaspidomorphi
Superclass Gnathosthomata
Fish and Fish-like Animals
Class Acanthodii
Class Placodermi**
Class Chondrichthyes**
Class Sarcopterygii**
Class Actinopterygii**
Tetrapods
Class Amphibia**
Class Reptilia**
Class Aves**
Class Mammalia**
**click to see pictures!