Class Reptilia

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Class Reptilia
BIO 2215 Oklahoma City Community College Dennis
Anderson
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Class Reptilia

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

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Amniotic Egg
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Ectothermic
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Reptile Skulls

• Anapsid
• No opening
• Synapsid
• One opening
• Diapsid
• Two openings
• Euryapsid
• One small opening

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Anapsids

• Turtles

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Diapsids

• Dinosaurs
• Snakes
• Lizards
• Crocodilians
• Birds

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Dinosaurs
Dominate animals in Mesozoic Era
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Euryapsid

• Extinct
• Ichythyosaurs

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Synapsids

• Pelycosaurs
• Dimetrodon
• Mammal like reptile

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Order Testudines

• No teeth in adult
• Shell
• Anapsid

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Turtle Shell
Carapace
Plastron
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Box TurtleTerrapene

• Adapted to live on land
• Feet not webbed
• High domed shell
• Safe

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Red-Eared SliderTrachemys

• Red stripe behind eye
• Live in or near water
• Ponds
• Slow moving water
• Pets
• Carry Salmonella

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Snapping TurtleChelydra

• Live in water
• Lay eggs on land
• Long tail
• Muscular limbs

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Giant TortoiseLifespan 150 Years
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Leatherback Sea Turtle

• 6 feet long
• 1,400 pounds

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Order Squamata

• Kinetic skull
• Movable joints
• Lizards
• Snakes
• Dinosaurs

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Geckos

• Small lizards
• Adhesive toe pads

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Gecko Toe Pads
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Wall LizardLacerta

• Color is variable
• Slender body
• Small scales

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Texas Horned Lizard

• Spines for protection
• Eats ants
• Endangered species

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Gila Monster

• Poisonous lizard
• Not very aggressive

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Green Iguana

• Ornamental crest
• Five feet long
• Tropical rainforest
• Mexico
• South America
• Omnivores

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Chameleons

• Arboreal
• Africa and Madagascar
• Catch insects with tongue

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Komodo Dragon

• Attack and eat humans
• 10 feet long
• 300 pounds
• Indonesia

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Snakes

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

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Swallow Prey
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Snake Venom
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Oklahoma Snakes


Poisonous
Nonpoisonous
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Copperhead Agkistrodon
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Cottonmouth or Water Moccasin Agkistrodon
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Western Diamond Backed RattlesnakeCrotalus
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Prairie Rattlesnake Crotalus
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Timber Rattlesnake Crotalus
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Black Rat Snake
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Diamond Backed WatersnakeNerodia
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Green Snake
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Coral Snake
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Order Crocodilia

• Crocodiles
• Caimans
• Alligators
• Gavials
• Elongated skull
• Four chambered heart

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Alligator
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Caiman

• Elevated eyes

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Gavial
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Alligator
Caiman
Crocodile
Gavial
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The End