Reptiles

PPT. by,

Robin D. Seamon

• Vertebrate

• Cold-blooded

• Skin covered in scales

• DRY!!!

• Mostly egg-layers (leathery), but some live-bearers

• Some have regeneration of tails

1.Order Crocodilia: crocodiles, alligators, caimans

Crocodile Alligator

Thin snout

Light tan

All over the world

Broad snout

Grayish-black

SE United States & China

LINK

Caiman

http://www.wildernessclassroom.com/www/schoolhouse/rainforest_library/animal_images/caiman.jpg

2. Order Testudines: turtles, tortoises, terrapin

Mostly in water

Webbed feet

winter: burrow in mud/ torpor

Turtle

Mostly on land

Short, stumpy feet

Hot/dry climate

Too hot: burrow

Tortoise

Land & water

Lives near water:

Rivers, swamps, brackish water

Terrapin

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3. Order Squamata:

lizards, snakes

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Non-venomous Snakes

Round eyes

Flat heads

No brows

Venomous Snakes

Slanted pupils

Heart/arrow-shaped heads

Raised brows

“Red on yellow, kill a fellow;

Red on black, friend of Jack”

Black snake E. Milk snake Worm snake

Corn snake Garter snake E. King snake

Copperhead Eastern diamond backed rattlesnake

Water Moccasin/ Cottonmouth

Coral Snake Scarlet King Snake

4. Order Sphenodontia: tuataras Link

Third parietal eye (light sensitive on top of head)

Only in New Zealand

One row of teeth on bottom, fit into two rows on top

Very ancient

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