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Artiodactyla
(redirected from Artiodactyls)

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Artiodactyla

Order of even-toed mammals containing pigs, camels, hippos, and ruminant animals, such as antelope, deer, and sheep.

The order is divided into nine living families (the other 20 families are all extinct). Suidae includes the eight species of pig; Tayassuidae, the two species of peccary; and Hippopotamidae, the two species of hippopotamuses. Camelidae has three to five species of camels and the guanaco. The five ruminant (cud-chewing) families are Tragulidae, with four species of chevrotain; Cervidae, 41 species of deer; Bovidae, 128 species of cattle, sheep, and antelopes; Antilocapridae, one species, the pronghorn, often misnamed antelope, of North America; and Giraffidae, two species of giraffe.



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? Mentioned in ? References in periodicals archive
 
The ancestors of artiodactyls, the group that includes gazelles, cattle, and most of today's other large herbivores, appeared during this interval.
Changes in the air: variations in atmospheric oxygen have affected ... by Perkins, Sid / Science News
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.
Origin of genetic information and evolution of biological species by Wahid, Pallacken Abdul / Islam & Science
However, the NHGRI studies indicate that the genomes of rodents are mutating faster than those of primates, carnivores, or artiodactyls (a type of ungulate).
Sequencing a zoo by Freeman, Kris / Environmental Health Perspectives
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