Geographical distribution of extant nonhuman primates

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Figure 1 Geographical distribution of extant nonhuman primates. Coloured areas indicate inclusive ranges of the five natural groups:
lemurs, lorisiforms, tarsiers, New World monkeys, Old World monkeys and apes. Lorisiforms occupy most but not all of the r...
Robert D. Martin
Primates
Current Biology, Volume 22, Issue 18, 2012, R785 - R790
http://dx.doi.org/10.1016/j.cub.2012.07.015

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Plesiadapiformes

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A bushy tail
A flat and broad head with orbits
facing the side,
meaning its eyes did not face
forward like today’s primates
Its braincase was
smaller than primates
today, but it had a
larger brain to body ratio
than hoofed mammals.
Rodent-like teeth for gnawing.
The jaws had molars which showed that
it chewed and grinded its food and showed that
it had an omnivorous diet.
Sharp, curved claws

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Behaviour
There has been debate about whether the Plesiadapis lived on
trees or on the ground. Some scientists argue that tree-dwelling
animals rarely have large populations, such as how the
Plesiadapis does, thus the Plesiadapis must have lived on the
ground similar to today’s ground squirrels and marmots. On the
other hand, the Plesiadapis’ skeletal structure proves that it was a
skilled climber and lived on trees. Its long, bushy tail, long curved
claws and short, strong limbs cause most scientists to believe that
the Plesiadapis was an arboreal mammal.

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Adapid

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Adapid

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Omomyidae