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Artiodactyla |
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Artiodactyla [‚ärd·ē·ō′dak·tə·lə] (vertebrate zoology) An order of terrestrial, herbivorous mammals characterized by having an even number of toes and by having the main limb axes pass between the third and fourth toes. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The ancestors of artiodactyls, the group that includes gazelles, cattle, and most of today's other large herbivores, appeared during this interval. The results of a study of the patterns of a certain type of genomic change, called transposon insertions, among thirteen vertebrate species supported an earlier proposal of evolutionary trees showing that primates (human, chimpanzee, baboon) are more closely related to rodents like the mouse and rat than to carnivores like the cat and dog or artiodactyls like the cow and pig. However, the NHGRI studies indicate that the genomes of rodents are mutating faster than those of primates, carnivores, or artiodactyls (a type of ungulate). |
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