Reptiles

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Reptiles
Mr. Mason Life Science
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• REPTILES class Reptilia 8000 species
• Lizards, snakes, turtles, crocodiles, alligators,
  geckos
• Evolved from amphibians
• 1st land animals
• Mesozoic Era Age of the Dinosaurs
• This was the time of the dinosaurs

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Characteristics of Reptiles

• Thick, dry, waterproof skin have scales
• Claws used to dig, climb, run
• Ectotherms (cold-blooded)
• Live everywhere but Antarctica
• Breathe through lungs
• Come in many sizes, shapes, and colors

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Dwarf Gecko
Sea Turtle
Reticulated Python
Alligator Lizard
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Frilled Lizard
Alligator
Crocodile
Turtle
Crocodile
Alligator
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Reproduction

• Leathery-shelled eggs
• Amniotic eggs
• an egg with a shell that protects, cushions,
  ands allows for breathing, feeding, and removal
  of wastes
• Usually internal fertilization
• Most lay eggs in soil or sand
• Some born alive

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Classifications

• Kingdom
• Phylum
• Class
• 4 groups
• Turtles Tortoises
• Crocs Gators
• Snakes Lizards
• Tuataras

• Animalia
• Chordata
• Reptilia

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Turtles Tortoises

• Hard shell on top and bottom
• Withdraw into shell for protection
• No teeth use beaks to feed on insects, worms,
  fish, and plants

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Turtle, Tortoise, or Terrapin ???

• Turtles usually live in or near water, have
  longer, webbed feet, and a less domed shell
• Tortoise live on land, have stumpy legs, high
  domed shell
• Terrapin live in brackish water part
  saltwater part freshwater

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Crocodiles

• Long, slender snouts
• Very aggressive
• Can attack cattle
• Eyes on top of flat head so they can see while
  hidden under water

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Alligators

• Broad/wide snouts
• Less aggressive
• Eat fish, turtles, water birds

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LIZARDS

• Moveable eyelids
• External ears
• Claws on each foot

• Eat small insects worms
• Some can break off tails to escape predators and
  regenerate new ones

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SNAKES

• No eyelids
• No legs
• No external ears
• Meat eaters (carnivores)
• Some poisonous fangs to inject venom
• Some constrictors wrap around prey and
  suffocate it
• Open mouth very wide to swallow prey whole

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Tuataras

• Live on a few islands near New Zealand
• Up to 60cm long
• Look like lizards
• No visible ears
• Most active in low temperatures
• Rest during the day and hunt at night

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The End !!!