Question: in addition to fishes the subphylum vertebrata includes
Answer: Vertebrate groups Image Class Estimated number of described species Group totals Anamniote lack amniotic membrane so need to reproduce in water Jawless Fish Myxini ( hagfish ) 32,900 Hyperoartia ( lamprey ) Jawed cartilaginous fish ray - finned fish lobe - finned fish Tetrapods amphibians 7,302 33,278 Amniote have amniotic membrane adapted to reproducing on land reptiles 10,711 birds 10,425 mammals 5,513 Total described species 66,178