Sentences with phrase «size of a gibbon»
«Last ape and human ancestor was about the size of a gibbon.»
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In gibbons, a part of the inner ear called the semicircular canals, which coordinates balance, is large relative to body size.
Falk suspects the size discrepancy can be linked to the philandering tendencies of our primate ancestors.Falk found that like humans, male rhesus monkeys had larger brains than females, while male and female gibbon apes were equally endowed.
When they examined the canal structures of more than 200 mammal species, the research team found that fast, agile movers — like gibbons and leaping tarsiers — have exceptionally large canals for their size, while slow, deliberate animals like sloths have small ones.
On the contrary, the findings of this new study suggest that the ancestor of all apes lived in an environment that favored a gibbon - like size, an ape of about five kilograms.
A gibbon - like size has a range of consequences for existing models of ape evolution.