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Understanding The Perissodactyla

Understanding The Perissodactyla. By Barbara. Perissodactyls as an Order. Only seventeen species of perissodactyls remain on the Earth today Those that remain include the horses, zebras, rhinos, and tapirs. Perissodactyls were once much more diverse

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Understanding The Perissodactyla

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  1. Understanding The Perissodactyla By Barbara

  2. Perissodactyls as an Order • Only seventeen species of perissodactyls remain on the Earth today • Those that remain include the horses, zebras, rhinos, and tapirs. • Perissodactyls were once much more diverse • It once included the largest land mammal of all time, the Eocene Indricotherium, which stood five meters (over sixteen feet) tall at the shoulder. • Most perissodactyl lineages went extinct in the late Eocene or Oligocene.

  3. “Odd-toed Ungulate” • An odd-toed ungulate is a mammal with hooves that feature an odd number of toes. • They either walk on three toes (like rhinos, tapirs, many extinct horses, and other extinct groups) or on a single toe (like recent horses). • The middle toe on each hoof is usually larger than its neighbors.

  4. Parahippusleonensis • Parahippus leonensis is an extinct proto-horse of the family Equidae • It’s the evolutionary link between the old forest-dwelling horses and the modern plains-dwelling grazers. • It lived in North America during the Miocene. • It has 3 toes, like primitive horses • Its third toe was stronger and larger, and carried the main weight of the body • It has a prolonged skull and a facial structure resembling the horses of today. • Its four premolars resembled the molar teeth, and the first were small and almost nonexistent.

  5. How to identify Parahippus leonesis

  6. Equus • Equus is a genus of animals in the family Equidae that includes the modern horse. • The horse skeleton averages 205 bones. • They lack a collarbone • A horse's "knee" is actually made up of the carpal bones that correspond to the human wrist. • The lower leg bones of a horse correspond to the bones of the human hand or foot.

  7. Tapirusveroensis • A tapir is a large browsing mammal, similar in shape to a pig; however, it is more related to the Rhino. • Out of the nine species of tapirs, only four are still in existence, and all four are endangered. • There may be more of these Prehistoric Tapir Skeletons found in Florida than any other place in the world. • These prehistoric mammals are good swimmers that usually stay close to water to cool themselves and avoid predators.

  8. How to identify Tapirus veroensis

  9. Works Cited • http://www.ucmp.berkeley.edu/mammal/mesaxonia/perissodactyla.html • http://www.flmnh.ufl.edu/fhc/parahippus.htm • http://en.wikipedia.org/wiki/Horse • http://www.fossil-treasures-of-florida.com/fossil-tapir.html

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