The term fish is used for any any swimming vertebrate with fins. It includes a diverse group of animals, divided into four taxonomic classes, Agnatha, Chondrichthyes, Osteichthyes, and Placoderma. Tax

[ad_1]

The order fish is used for any any swimming vertebrate after a while fins. It includes a distinct collocation of animals, disjoined into four taxonomic classes, Agnatha, Chondrichthyes, Osteichthyes, and Placoderma. Taxonomists foremost disjoined all "fish" into two classes, Agnatha and Placoderma. The Placoderma are considered ancestors of all other fish. What fossil testimony helped taxonomists disconnected all "fish" into these two branches for group?

Show more

[ad_2]
Source integrate