31 Fish and Amphibians
Animalia kingdom modified
Life diversity
Fishes
Vertebrates
Stuiring Ray
Fish 3 classes –Agnatha: jawless fishes Lamprey, Hagfish –Chondricthyes: Cartilaginous fishes Sharks, skates, rays –Ostichthyes: Bony fishes All other.
PHYLUM CHORDATA Dorsal Notochord-long rod that supports the body- becomes the vertebrae in most. Dorsal Nerve cord-becomes the central nervous system.
Skates & Rays Skates and rays are both cartilaginous fishes that are related to the sharks.
KINGDOM ANIMALIA Phylum Chordata Class Chondrichthyes.
FISHES Agnatha Chondrichthyes Osteichthyes. General Characteristics Ectothermic Vertebrates Have scales Swim with fins Almost all exclusively aquatic.
