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| They eat all kinds of foold, including insects and small animals, as well as fruits, seeds, leaves, and roots. |
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| Chewing teeth that reflect an omnivorous diet. |
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Front teeth which are often very specialized , principally in the lower primates. |
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| A feature which allows an even more precise and powerful grip. |
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Resemble other mammals more than the anthropoid primates do. For example, the prosimians depend much more on smell for information than do anthropoids. Also in contrast with the anthropoids, they typically have more mobile ears, whiskers, longer snouts, and relatively fixed facial expressions. The prosimians also exhibit many traits shared by all primates, including grasping hands, stereoscopic vision, and enlarged visual centers in the brain. |
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| Animals that move on all fours |
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| Vertical Clinging and Leaping |
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| Some species, such as the indris use their hind limbs alone to push off from one vertical position to another . |
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| The anthropoid suborder includes humans, apes, and monkeys. Most anthropoids share several traits in varying degrees. They have rounded braincases; reduced, nonmobile outer ears; and relatively small, flat faces instead of muzzles. They have highly efficient reproductive systems. They also have highly dextrous hands. |
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| Platyrrhines and Catarrhines |
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Two groups divided from the anthropoids. Take their name form the nose shapeof the different anthropoids. Platyrrhines have broad, flat-bridged noses, with nostrils facing outward; these monkeys are found only in the New World, in Central and south America. Catarrhines have narrow noses with nostrils facing downward. Catarrhines include monkeys of the Old World (Africa, Asia, and Europe), as well as apes and humans. |
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| Grasping tail of some New World monkeys |
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The sexes look very different In Cercopithecine Monkeys |
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Contains three separate families: The lesser apes or hylobates (gibbons and siamangs) The great apes or pongids (orangutans, gorillas, and chimpanzees) And humans or hominids. Brains are relatively large, especially the areas of teh cerebral cortex associated with the ability to integrate data. All hominoids have fairly long arms, short, broad trunks, and no tails. The wrist, elbow, and shoulder joints of homioids allow a greater range of movement than in other primates. |
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The lower molars have five cusps with a Y-shaped groove opening toward the cheek running between them. Dentition of hominoids |
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Their molars have two ridges or "loafs" running perpendicular to the cheeks. Dentition of some hominoids All hominoids except for humans also have long canine teeth that project beyond the tops of the other teeth. |
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| the corresponding space on the opposite jaw of bilophodont pattern. Where the canine sits when the jaws are closed. |
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Their long arms and fingers let them swing hand over hand through the trees. Gibbons and Siamangs |
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To support the weight of massive chests, gorillas travel mostly on the ground on all fours. Gorillas |
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The center of speech and other higher mental activities. The cereral cortex is very large and complex in the hominid brain. |
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