Classes of Vertebrates

1. FishesA. Class Osteichtyes (Bony Fishes)

largest group of fishhave bony skeletons, paired fins, protective

overlapping scalesfound both in fresh and saltwater habitatsswim bladder or air bladder floatation device to keep them from sinking

1. FishesB. Class Chondrichthyes (Cartilageous Fishes)

have flexible skeletons made up of cartilage tissuefound in saltwatermovable upper and lower jaws with several rows of sharp teeth

1. FishesB. Class Chondrichthyes (CartilageousFishes)Skates and rays

have flattened winglike bodies with whiplike tailslive on the ocean floor and feed on worms, mollusk and

crustaceans Stingrays have poison stingers in tails Electric Rays produce large electric charge Sharks meat eaters and active hunter

2. Class Amphibia (Amphibians)

lives in water and part on landhave smooth, moist, scale less skins

a. tailed amphibians salamanders and newts have long bodies, long tails, 2 pairs of short

legs active only at night

2. Class Amphibia (Amphibians) Frogs have thin, moist skin

live near ponds, streams, and swamps during winter, they hibernate by burrowing

into the mud eat insects and worms

tadpoles eat aquatic plantspredators include snakes, birds and turtles

2. Class Amphibia (Amphibians)a. tailless amphibians frogs and toads

short and stout Toads have dry, rough and warty skin

feed at night when it is cooler and more humid

during winter, they hibernate by burrowing into the sand

HIBERNATE life process slows down and become inactive

3. Class Reptilia (Reptiles)

includes crocodiles, alligators, turtles, tortoises, lizards, snakes do not undergo metamorphosis

3. Class Reptilia (Reptiles) Crocodiles and Alligators

largest living reptiles to more than 7 metersfound in lakes, swamps & rivers in tropical regionhave long snouts, powerful jaws with large teeth

and long muscular tailsfeed on animals that they capture

3. Class Reptilia (Reptiles) Alligators

snout is rounded

Crocodilessnout is longmore vicious and aggressivefeed on animals that they capture

3. Class Reptilia (Reptiles) Turtles

found both on land and in saltwater no teeth but grab and tear their food with the sharp edges of their beak

feed on plants and small animalsmay live to be more 100 yrs. old

3. Class Reptilia (Reptiles) Land dwelling turtles

Tortoiseslow movingshort legs have claws for digging180 klgs.

Sea turtlesocean dwelling 2 m and weight 500 klgs.lay eggs in holes

3. Class Reptilia (Reptiles) Snakes

feed on mice, rats, frogs, toads, insects, fish & other small animals

some swallow their prey alive while some kill their prey before they swallow it.

3. Class Reptilia (Reptiles)

3. Class Reptilia (Reptiles) Phytons, boas and king snakes

coil their body around their body

*Venoms neurotoxins which attack nervous tissues

from the pair of specialize teeth called fangs

cause muscle paralysis and affect the heart and lungs

3. Class Reptilia (Reptiles) Lizards & Snake

belongs to the same ordercovered with scales

Lizardsfour leggedhave movable eyelids and external ear openingfound in deserts, forest & in water

3. Class Reptilia (Reptiles) Lizards

small lizards feed on insects, worms, spiders and snails

large lizards eat eggs, bird, small lizards and small mammals

few lizards feed on plants