1. Phylum Chordata Subphylum Vertebrata
Marine Vertebrates I
Phylum Chordata
Subphylum Vertebrata

2. Characteristics of Vertebrates
Backbone- vertebral column
Encloses the dorsal nerve cord (spinal cord )
Bilateral symmetry
Endoskeleton
Marine Fishes- 3 major groups
Jawless Fish
Cartilaginous Fish
Bony Fish
In Biology- page
Vertebrae are individual segments that make up the backbone. The vertebral column surrounds and protects the dorsal nerve cord. Define DORSAL
Define bilateral symmetry compared to spherical and radial symmetry

3. Class Agnatha- Jawless fish

4. Hagfish Lack Jaws Lack paired fins Lack scales Lack true bones
Bottom dwellers
Secrete thick slime

5. Lamprey

6. Lampreys Mostly fresh water fish
Anadromous life cycle- hatched in fresh water, migrate to salt water, and return to fresh water to reproduce.
Parasites of bony fishes

7. Class chondrichthyes