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How Snakes Jump And Move Without Legs

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 Biology   |   Environmental   |   Science
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Snakes evolved without legs, but how are they able to move?

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Read More:
Four-Legged Fossil Snake Is a World First
http://www.nature.com/news/four-legged-fossil-snake-is-a-world-first-1.18050#/b1
"The first four-legged fossil snake ever found is forcing scientists to rethink how snakes evolved from lizards. Although it has four legs, Tetrapodophis amplectus has other features that clearly mark it as a snake, says Nick Longrich, a palaeontologist at the University of Bath, UK."

How Snakes Lost Their Legs
http://news.discovery.com/animals/zoo-animals/snakes-lost-legs-evolution-110207.htm
"Some, if not all, snakes used to have legs, and now new research suggests snakes lost their limbs by growing them more slowly or for a shorter period of time. The research, outlined in the latest issue of the Journal of Vertebrate Paleontology, strengthens the belief that snakes evolved from a lizard that either burrowed on land or swam in the ocean."

Gliding Flight in Chrysopelea: Turning a Snake into a Wing
https://icb.oxfordjournals.org/content/51/6/969.full
"Although many cylindrical animals swim through water, flying snakes of the genus Chrysopelea are the only limbless animals that glide through air. Despite a lack of limbs, these snakes can actively launch by jumping, maintain a stable glide path without obvious control surfaces, maneuver, and safely land without injury."

Snakes Use Scales to Slither
http://www.nature.com/news/2009/090608/full/news.2009.555.html
"Snakes rely on the frictional properties of their scales to slither, a new study suggests. The work could explain how snakes move across bare terrain such as sand and roads, where they can't push off rocks and branches."

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