Vertebrates are actually a Phylum of the Kingdom of Animalia and are divided into Classes
Class Agnatha (jawless fishes)
Class Chondrichthyes (cartilaginous fishes)
Class Osteichthyes (bony fishes)
Class Amphibia (amphibians)
Class Reptilia (reptiles)
Class Aves (birds)
Class Mammalia (mammals)
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