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| | The Family Equidae: A Look at Nonorthgenetic Evolution (Site not responding. Last check: 2007-10-22) |
 | | Slightly larger than the Miohippus, it retained the three-toed feature of its immediate ancestors; but, it was beginning the development of springy ligaments under the foot, which eventually gave rise to the hoof (Hunt 1995). |
 | | Next, the Mesohippus and Miohippus still showed a trend towards larger size, a toe was lost (leaving three on each limb), and dentition advancement continued. |
 | | Third, genera of Parahippus and Merychippus were increased in body size, had three toes on each limb, showed signs of a spring-foot mechanism (which led to the development of the hoof), and developed high-crowns and cement for grazing adaptations. |
| www.public.iastate.edu /~rcastro/webpages/evolutiontermpaper.html (1800 words) |
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