Fish Anatomy
31 Fish and Amphibians
Kingdom Animalia
Animalia kingdom modified
Life diversity
Figure 16.1 Early jawless fishes: (a) Sacabambaspis from the Mid Ordovician of Brazil, the oldest well- preserved fish; (b) the osteostracan Hemicyclaspis.
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.
A General Look External Anatomy There are about 25,000 different species of fishes. This is more than any other vertebrate group.
Using Teeth to Determine the Evolutionary Lineage of the Great White Shark Sarah Elise Field Bailey Keeler Elizabeth Lillard Kristin Oliver.
Gas Exchange: Animals. Cellular Respiration All living things obtain the energy they need by metabolizing energy-rich compounds, such as carbohydrates.
Reproduction in fishes. Reproduction what defines male vs. female?
