1. Phylum
Chordata

2. Phylum Chordata Includes the following classes:
Class Myxini (hagfishes)
Class Cephalaspidomorphi (lampreys)
Class Chondrichthyes (cartilaginous fish)
Class Osteichthyes (bony fish)
Class Amphibia (amphibians)
Class Reptilia (reptiles)
Class Aves (birds)
Class Mammalia (mammals)

3. Fish Diversity.avi
Fish
Fish are aquatic vertebrates that are characterized by paired fins (movement), scales (protection), and gills (exchanging gases).
Bilateral body symmetry.
Ex. Sharks, lampreys, perch

4. Fish
There are many different types of fish that can be broken down into 4 different classes. The first 2 classes are jawless fish.
Class Myxini (hagfish)
Class Cephalaspidomorphi (lamprey)
Class Chondrichthyes (cartilaginous fish such as sharks and rays)
“chondr” = cartilage
“ichthyes” = fish
Class Osteichthyes (bony fish such as perch)
“oste” = bone

5. Class Amphibia
An amphibian is a vertebrate that, with some exceptions:
Lives in water as a larva and on land as an adult
Breathes with lungs as an adult
Has moist skin that contains mucus glands
Lacks scales and claws.
Bilateral body symmetry
Ex. Frogs, Toads, Salamanders

6. Intro to Reptiles.avi
Class Reptilia
Reptiles have dry, scaly skin, lungs, and terrestrial eggs with several membranes.
Bilateral body symmetry
Ex. Turtles, lizards, snakes, crocodiles

7. Owl Wings.avi
Class Aves
Birds are reptile-like animals that maintain a constant internal body temperature.
They have feathers, two legs covered with scales, and front limbs modified into wings.
Bilateral body symmetry.
Ex. Parrot, Ostrich, Falcon, Cardinal

8. Shrew Babies.avi
Class Mammalia
All mammals are characterized by hair and mammary glands, which produce milk to nourish their young.
Bilateral body symmetry.
Ex. Bear, human, bat, seal