Class Reptilia Scales Amniotic egg



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Class Reptilia

  • Scales

  • Amniotic egg

  • One occipital condyle

  • Ectothermic

  • Three chambered heart

    • Alligators have 4
  • Claws





Amniotic Egg









Ectothermic



Reptile Skulls

  • Anapsid

    • No opening
  • Synapsid

    • One opening
  • Diapsid

    • Two openings
  • Euryapsid

    • One small opening


Anapsids

  • Turtles



Diapsids

  • Dinosaurs

  • Snakes

  • Lizards

  • Crocodilians

  • Birds



Dinosaurs



Euryapsid

  • Extinct

  • Ichythyosaurs



Synapsids

  • Pelycosaurs

  • Dimetrodon

    • Mammal like reptile


Order Testudines



Turtle Shell





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





Giant Tortoise Lifespan 150 Years



Leatherback Sea Turtle



Order Squamata

  • Kinetic skull

    • Movable joints
  • Lizards

  • Snakes

  • Dinosaurs



Geckos

  • Small lizards

  • Adhesive toe pads





Wall Lizard Lacerta

  • Color is variable

  • Slender body

  • Small scales



Texas Horned Lizard



Gila Monster

  • Poisonous lizard

  • Not very aggressive



Green Iguana

  • Ornamental crest

  • Five feet long

  • Tropical rainforest

    • Mexico
    • South America
  • Omnivores



Chameleons



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



Oklahoma Snakes



Copperhead Agkistrodon



Cottonmouth or Water Moccasin Agkistrodon



Western 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





Caiman

  • Elevated eyes



Gavial





The End



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