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20 Cards in this Set
- Front
- Back
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A group of mammals in the order Primates that have complex behavior, varied forms of locomotion, and a unique suite of traits, including larger brains, forward-facing eyes, fingernails, and reduced snouts.
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Primates
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Tree-dwelling; adapted to living in the trees.
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Arboreal
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Anterior teeth that have been tilted forward, creating a scraper.
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tooth comb
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Refers to those organisms that normally are awake and active during daylight hours.
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diurnal
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A tail that acts as a kind of a hand for support in trees, common in New World monkeys.
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prehensile tail
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generally related to the sitting positions of cercopithecoid monkeys, gibbons, and siamangs, but the selective advantage of ischial callosities to the sitting postures of these animals is uncertain. It is suggested that ischial callosities are adaptations that evolved for comfortable and stable sitting on thin branches during feeding in the peripheral branch zone.
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Ischial callosities
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Organisms that move by brachiation, or arm-swinging.
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brachiators
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the prosimian tarsiers and all of the true simians (the monkeys and the apes, including humans).
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Haplorhini
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One of the most distinguishing characteristic of these 118 species is their wet noses, and it is this feature for which the grouping is named.
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Strepsirrhini
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referring to anatomical differences between males and females of the same species. Primate males are usually significantly larger and more muscular than females. This is especially true of semi-terrestrial monkeys and the great apes. Humans are also sexually dimorphic.
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sexual dimorphism
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the quantity of each type of tooth (e.g., incisor, canine, premolar, and molar) in each quadrant of the mouth, counting from the front. The human dental formula is 2.1.2.3. The Old World monkeys and apes also share this dental formula.
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dental formula
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a strepsirrhine native to Madagascar that combines rodent-like teeth with a long, thin middle finger to fill the same ecological niche as a woodpecker.
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Aye-aye
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carefully picking through hair looking for insects, twigs, and other debris. Primates frequently allogroom, which is to say they groom each other to reinforce social relationships and reduce psychological tension.
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grooming
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chisel shaped teeth at the front of the mouth in mammals. All primates normally have 8 incisors (2 in each quadrant of the mouth). The common mammal pattern is 12 incisors (3 in each quadrant).
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incisors
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any member of the Hominoidea superfamily of primates.
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ape
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Ceboidea
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New World Monkey
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stereoscopic vision
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the ability to see things in three dimensions (3-D). Stereoscopic vision is what allows for true depth perception.
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Ceboidea, New World Monkey
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2-incisors
1-canine 3-premolars 3-molars |
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Humans, apes, cercopithecoidea
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2-incisors
1-canine 2-premolars 3-molars |
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Premolars and molars are used for....
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Premolars and molars are used for grinding.
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