1. Kingdom Animalia Phylum Chordata
Most are classified as VERTEBRATES – organisms with a backbone

2. Supraclass Pisces Fish
Ectothermic - cold-blooded
Gills for gas exchange
Water habitat
Scavengers, carnivores, predators, parasites
Swim with fins
External fertilization (bony fish)
Separate sexes
Bilateral symmetry

3. Class Agnatha Jawless Fish – lampreys & hagfish
Lampreys: live in salt and freshwater
Parasitic- round mouth lined with teeth
Slimy skin, no scales

4. Hagfish: scavengers
Use 6 short tentacles surrounding the mouth to find its food
Blind

5. Class Chondrichthyes Cartilaginous Fish – shark, ray, & skates
Sharks
paired fins
streamlined bodies
predators - rely on sense of smell and movement
Rays and Skates
flat, wide bodies with long thin tails for life on ocean bottom
large pectoral fins (look like wings)

7. Class Osteichthyes Bony Fish – ex. Perch, trout, bass
scales covering the body
skeleton made of bone
swim with the aid of fins
have swim bladder that works like a balloon

9. Class Amphibia – frogs, toads, salamanders, & newts
Characteristics
“Double Life” -lives part of its life in water and part on land
ectothermic
no scales or claws
Have thin, moist skin

10. larvae are herbivores, adults carnivores
larva have tails to move in water
external fertilization with no parental care
lay eggs without shells in water

11. Body Plan Bilateral symmetry 3 chambered heart
Larvae breathe through gills; adults breathe through lungs
Breathe through thin, moist skin (produces mucus)
Changes from larva to adult through
the process of metamorphosis

12. Class Reptilia – snakes, lizards, turtles, alligators
Characteristics
First vertebrate to live and reproduce entirely on land
Ectothermic
Carnivores or omnivores
Have scales and claws
Internal fertilization with no parental care
Lay amniotic eggs with leathery shells

13. Body Plan Bilateral symmetry 3 chambered heart Breathe through lungs
Dry, scaly skin prevents water loss

15. Class Aves Birds Characteristics Endothermic
Has feathers and two legs covered with scales
Front limbs are wings
Beaks, claws and good vision help birds get food
Carnivores, herbivores, insectivores
Internal fertilization
Amniotic eggs with hard outer shell

16. Body Plan Wings 4-chambered heart Lungs Hollow bones
Strong breast muscles

20. Class Mammalia Characteristics
Hair or fur at some stage of development
Give birth to live young (except Monotremes)
Endotherms
Herbivores, carnivores and omnivores
Walk, swim, or fly
Sexual (egg and sperm) with separate sexes
Internal fertilization

21. Body Plan Internal skeleton Complex organ systems
Mammary glands (for milk)
Four-chambered heart
Lungs

22. Marsupials (live young develop in a pouch)
Monotremes (lay eggs)
Duckbill platypus
Marsupials (live young develop in a pouch)
Kangaroos, koalas
Placental (young develops internally)
12 Orders with examples such as
Primates
Bats
Whales & dolphins
Walrus & seals
Hoofed livestock
Rodents
Bears
Elephants

23. Monotreme
Marsupials