Class Reptilia.

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Presentation transcript:

Class Reptilia

Class Reptilia Scales Amniotic egg One occipital condyle Ectothermic Three chambered heart Alligators have 4 Claws

Fig. 26.3

Amniotic Egg

Fig. 26.4

Fig. 26.5

Ectothermic

Reptile Skulls Anapsid Synapsid Diapsid Euryapsid No opening One opening Diapsid Two openings Euryapsid One small opening

Anapsids Turtles

Diapsids Dinosaurs Snakes Lizards Crocodilians Birds

Dinosaurs Dominate animals in Mesozoic Era

Euryapsid Extinct Ichythyosaurs

Synapsids Pelycosaurs Dimetrodon Mammal like reptile

Order Testudines No teeth in adult Shell Anapsid

Turtle Shell Carapace Plastron

Box Turtle Terrapene Adapted to live on land Feet not webbed High domed shell Safe

Red-Eared Slider Trachemys Red stripe behind eye Live in or near water Ponds Slow moving water Pets Carry Salmonella

Snapping Turtle Chelydra Live in water Lay eggs on land Long tail Muscular limbs

Fig. 26.7

Giant Tortoise Lifespan 150 Years

Leatherback Sea Turtle 6 feet long 1,400 pounds

Order Squamata Kinetic skull Movable joints Lizards Snakes Dinosaurs

Geckos Small lizards Adhesive toe pads

Gecko Toe Pads Fig. 26.12

Wall Lizard Lacerta Color is variable Slender body Small scales

Texas Horned Lizard Spines for protection Eats ants Endangered species

Gila Monster Poisonous lizard Not very aggressive

Green Iguana Ornamental crest Five feet long Tropical rainforest Mexico South America Omnivores

Chameleons Arboreal Africa and Madagascar Catch insects with tongue

Komodo Dragon Attack and eat humans 10 feet long 300 pounds Indonesia

Snakes No legs No external ears Jacobson’s organ Sense smell with aid of tongue Cornea of eye protected with a spectacle transparent membrane Skull bones loose Swallow large prey

Swallow Prey

Snake Venom

Alabama Snakes Poisonous Nonpoisonous

Copperhead Agkistrodon

Cottonmouth or Water Moccasin Agkistrodon

Eastern Diamond Backed Rattlesnake Crotalus

Prairie Rattlesnake Crotalus

Timber Rattlesnake Crotalus

Black Rat Snake

Diamond Backed Watersnake Nerodia

Green Snake

Coral Snake

Order Crocodilia Crocodiles Caimans Alligators Gavials Elongated skull Four chambered heart

Alligator

Caiman Elevated eyes

Gavial

Alligator Caiman Crocodile Gavial

The End Fig. 26.14