MARINE FISHES
THE FIRST VERTEBRATES. Oldest and simplest vertebrates Most abundant vertebrates Three groups of fishes ◦ Jawless fishes ◦ Cartilaginous fishes.
Marine Vertebrates Types of Fishes. I) Vertebrates A)Subphylum Vertebrae B)Four characteristics of chordates C)Backbone: AKA Spine or Vertebral Column.
