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Horse hoof Evolution

Horse hoof Evolution. By: Travis Hartneck David Stacy. Topic: The evolution of the horses hooves from multiple toes to a single hoof. Questions Asked: Why did the leg and body structure of horses evolve so drastically over a 55 million year stretch?

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Horse hoof Evolution

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  1. Horse hoof Evolution By: Travis Hartneck David Stacy

  2. Topic: The evolution of the horses hooves from multiple toes to a single hoof • Questions Asked: • Why did the leg and body structure of horses evolve so drastically over a 55 million year stretch? • What were the evolutionary steps involved in this change?

  3. Phylogeny:

  4. Hoof & Leg Structure:

  5. Four toed:

  6. Three toed:

  7. Three toed:

  8. Single hoof:

  9. Change in body size:

  10. Reasons for the evolutionary change: • Habitat Change • Evasion of predators • Change in diet • Browsers to Grazers • Expansion of range

  11. Works Cited • Franzen, J. L. (2006). The ris of horses 55 million years of evolution. Balitmore: The John Hopkins University Press. • Lull, R.S. (1907). The evolution of the horse family, as illustratd in the yale collecions. American journal of science, 135(161), Retrieved from http://www.ajsonline.org/cgi/reprint/s4-23/135/161 • MacFadden, B.J. (1992). Fossil horses. Cambridge: Cambridge University Press. • MacFadden, B.J. (2005). Fossil horses evidence for evolution. Science, 307(5716), Retrieved from http://web.ebscohost.com/ehost/detail?hid=11&sid=3c50abc2-e151-415a-92e7-4f7e0ef834be%40sessionmgr15&vid=2&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=a9h&AN=16555904 • Simpson, G.G. (1951). Horses. New York: Oxford University Press.

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