Tutorspoint provides Various Classes of The Sub-Phyla Vertebrata Homework Help & Assignment help Class Chondrichthyes: 1.      Classified under the division Gnathostomata, which is further sub-divided into two super class, Pisces and Tetrapoda. The first class under the super-class Pisces is Chondrichtyes 2.      Marine animals with cartilaginous endoskeleton and a streamline body designed to swim freely…