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History

History. Turtles: the oldest living reptiles and have gone particularly unchanged in 200 million years. Turtles are considered to be the more intelligent of the reptiles. Lizards: make up the largest group of reptiles numbering @ 3,000 worldwide. History cont’d. Snakes:.

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History

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  1. History • Turtles: the oldest living reptiles and have gone particularly unchanged in 200 million years. Turtles are considered to be the more intelligent of the reptiles. • Lizards: make up the largest group of reptiles numbering @ 3,000 worldwide.

  2. History cont’d • Snakes:

  3. Unique Characteristics of Reptiles • indeterminate growth • scales cover the entire body • snakes shed their shin in one piece • when snakes shed their skin they “hide” from predators • legs- well developed-land travel • the characteristic that makes snakes unique is their loss of limbs • respiration-lungs-air breathing • eggs-calcareous-waterproof-laid on land • some snakes give birth to live young, examples are water snakes, garter snakes, ribbon snakes, pit vipers, etc… just to name a few • mating-on land mostly • female internal fertilization of the eggs • no larval stage-no transformation • Cold blooded

  4. http://health.stateuniversity.com/article_images/gem_01_img0108.jpghttp://health.stateuniversity.com/article_images/gem_01_img0108.jpg

  5. http://www.animalpicturesarchive.com/ArchOLD/1086408038.jpg

  6. http://www.tpwd.state.tx.us/kids/wild_things/images/snake_timber_rattlesnake400.jpghttp://www.tpwd.state.tx.us/kids/wild_things/images/snake_timber_rattlesnake400.jpg

  7. http://niahd.wm.edu/attachments/20151.jpg

  8. http://farm1.static.flickr.com/238/452663563_d306364789.jpg

  9. Medical importance • The most common is the snake venom used as anti-venom http://www.worldbook.com/wb/Students?content_spotlight/reptiles/type_snake_imp • In ancient Greece snakes were seen as healers

  10. Snake rattle http://www.youtube.com/watch?v=7raYkYyB1wo • Snake hisshttp://www.youtube.com/watch?v=Er6R66bxaiE&feature=related • Timber rattlesnake:http://www.youtube.com/watch?v=DQ3RIX9Bk28

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