Phylum Chordata (Subphylum Vertebrata Clades)

Class Amphibia (frogs, toads, salamanders)

Class Lepidosauromorpha (snakes, lizards)

Class Actinista (coelocanths)

Class Actinopterygii (rayfinned fishes)

Class Aves

Class Myxinoidea (hagfishes)

Class Crocodilia

Class Petromyzontida (lamprey)

Class Mammalia

Class Chondrichthyes (sharks, rays, skates, chimeras)

Class Testudines (turtles, tortoises)

Class Dipnoi (lungfishes)