What do Old World monkeys have?
What do Old World monkeys have?
Old World monkeys have a variety of facial features; some have snouts, some are flat nosed, and many exhibit coloration. Most have tails, but they are not prehensile.
How do Old World and New World monkeys differ?
Monkeys are arranged into two main groups: Old World and New World. New World monkeys have broad noses with a wide septum separating outwardly directed nostrils, whereas Old World monkeys have narrow noses with a thin septum and downward-facing nostrils, as do apes and humans.
Do Old World monkeys have 32 teeth?
All Old World monkeys have the same dental formula: I2/2; C1/1; P2/2; M3/3 = 32, which differs from that of New World monkeys. They have fewer teeth than cebid monkeys due to the absence of one pair of upper premolars and one pair of lower premolars.
How do you identify an Old World monkey?
Old World monkeys are often on the ground, and live in a variety of habitats. Another is nose shape. Old World monkeys have noses that are lower on their face, and their nostrils are close together and either point down or to the front. New World monkey nostrils are far apart and point out to the side.
Do hominoids have tails?
Living hominoids are united by features related to habitual orthogrady and below-branch behaviors: broad torsos with widely-spaced shoulder joints, stiff backs, long forelimbs, mobile limb joints, strong grasping ability, and the absence of a tail (Huxley, 1863; Harrison, 1987 & 1991; Shoshani et al., 1996).
Do Old World monkeys live on the ground?
They are found in almost every kind of habitat, from mangrove swamps to mountain forests. Some are tree-dwellers, but others spend much of their time on the ground.
When did the first Old World monkeys appear?
20 million years ago
In the early Miocene, about 22 million years ago, the many kinds of arboreally adapted primitive catarrhines from East Africa suggest a long history of prior diversification. Fossils at 20 million years ago include fragments attributed to Victoriapithecus, the earliest Old World monkey.
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