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Order Squamata

Order Squamata. John Whitmoyer. Introduction. Means scaled reptiles. Composed of lizards, snakes, and worm lizards. Has 96% of known living reptiles. Introduction (cont.). Characterized by a flexible jaw structure, and have scales or shields.

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Order Squamata

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  1. Order Squamata John Whitmoyer

  2. Introduction • Means scaled reptiles. • Composed of lizards, snakes, and worm lizards. • Has 96% of known living reptiles.

  3. Introduction (cont.) • Characterized by a flexible jaw structure, and have scales or shields. • Smell with a special organ called the Jacobson’s organ.

  4. Lizards • Suborder is Lacertilia or Sauria. • 4,470 different species, only 2 are venomous. • Have visible ears, which are holes in the side of the head.

  5. Heaviest lizard is the Indonesian Komodo Dragon • Longest lizard is the Crocodile Monitor • Smallest lizard is the Jaragua Lizard

  6. Snakes • Suborder is Serpentes • 2,920 different species, either venomous or non-venomous. • Believed to hear very low-pitched sounds • Have a spectacle or clear scale over their eye. • Some snakes have pit organs on their face.

  7. Smallest snakes are in the Blind Snake families. • Largest snakes are Reticulated Pythons and Green Anacondas.

  8. Worm Lizards • Suborder is Amphisbaenia • 156 different species, most are fossorial. • Scales are arranged in rings and separated by grooves. • Sizes can range from 3.1 to 32 inches.

  9. Conservation • The IUCN lists 243 species of Squamata either extinct or at the risk of becoming extinct. • 14 extinct, 70 critically endangered, 159 endangered. • 1 extinct and 4 endangered in the United States.

  10. Questions?

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