
Brachiators are a type of primate mostly from the family Hylobatidae, which includes gibbons. Brachiators use their arms to move from tree branch to tree branch, through a process called brachiation. Their arms are longer than their legs, and are much more powerful. ==Evolution== Brachiators began as four-footed monkey-like creatures in the Tertia...
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http://en.wikipedia.org/wiki/Brachiator

an animal that can progress by means of brachiation, as a gibbon.
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https://www.infoplease.com/dictionary/brachiator
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