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primate
primate member of the mammalian order Primates, which includes humans, apes , monkeys , and prosimians, or lower primates. The group can be traced to the late Cretaceous period, where members were forest dwellers. As a whole, they are arboreal, although a few species are terrestrial; nearly all i...
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tarsier
tarsier , small, nocturnal, forest-dwelling prosimian primate , genus Tarsius. There are at least three species found in the Philippines, in Sumatra and Borneo, and in Sulawesi. Tarsiers are about 6 in. (15 cm) long with a 10 in. (25 cm) hairless tail, and weigh about 4.5 oz (130 g). The body is ...
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aye-aye
aye-aye , name for an aberrant primate, Daubentonia madagascariensis, related to the lemurs but distinguished by its specialized teeth and fingers. A large nocturnal and arboreal primate, it is found in dense bamboo forests in two isolated regions of Madagascar. The aye-aye is about the size of ...
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Robert Mearns Yerkes
Robert Mearns Yerkes , 1876-1956, American psychologist, b. Bucks co., Pa., grad. Harvard (B.A. 1898; Ph.D.1902). He taught (1902-17) at Harvard, served (1919-24) on the National Research Council, and held a post as professor of psychobiology at Yale (1924-44). He also founded (1929) and directed th...
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anthropometry
anthropometry , technique of measuring the human body in terms of dimensions, proportions, and ratios such as those provided by the cephalic index . Once the standard approach to racial classification and comparing humans to other primates, the technique is now used for deciding the range of clothi...
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bush baby
bush baby name for several small, active nocturnal primates of the loris family, found in forested parts of Africa. Bush babies, also called galagos, form the subfamily Galaginae. The smallest are about 1 ft (30 cm) long, including the long, furry tail. All have fluffy fur, small pointed faces wi...
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hand
hand terminal part of the forelimb in primates. The human hand consists of the wrist, palm, four fingers, and thumb. In humans and other primates, the thumb is opposable, i.e., it can be moved into a position opposite to the other four digits. Opposable thumbs make possible precise movements such a...
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insectivore
insectivore , term broadly given to any insect-eating animal or plant. More specifically, the term refers to mammals of the order Insectivora (see Chordata ), including the shrew , mole , hedgehog , tenrec , and solenodon . Insectivores are small animals, ranging from 2 to 16 in. (5-40 cm) in ...
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loris
loris name for slow-moving, nocturnal, arboreal primates of the family Lorisidae, found in India, Sri Lanka, and SE Asia. Lorises have round heads, large round eyes, and furry bodies. They have no tails, and their index fingers are vestigial. Lorises move hand over hand through the trees, gripping ...
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nail
nail in anatomy, the horny outgrowth shielding the tip of the finger and the toe in humans and most other primates. The nail consists of dead cells pushed outward by dividing cells in the root, a fold of epidermis at the base of the nail (see skin ). The hard material in nail cells is the tough pr...
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