BAA outline 2

BAA outline 2 - Lemur catta Alouatta palliata Erythrocebus...

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Outline for Powerpoints 3-4 “Survey of the Primates” 4,000 species of mammals Primates within placental subgroup of mammals 190 species of nonhuman primates Characteristics of Mammals Warm-blooded homiotherms Poikilotherms cold-blooded Heterodontism specific teeth pattern Canines, incisors, check teeth (premolars, molars) Homodont—all teeth the same like in reptiles Reproductive economy Inquisitive behavior Characteristics of Primates Pentadactyly 5 digits on hands and feet Nails instead of claws nails do not interfere with grasping ability Bony eye socket completely surrounded by bone unlike other mammals where the eye socket is open Mobile digits Better grasping ability Tactile pads on digits increase sensory response through nerve fibers Opposable thumb and partially opposable big toe better grasping and balance Shortened nose actually whole face gets shorter Smell is less important Vision is more important Color vision (except for in nocturnal primates) Depth perception More complex brain Brain is larger and more complex with the convoluted cortex Longer infant dependency/Longer gestation Fewer offspring, delayed maturation, longer life span
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BAA outline 2 - Lemur catta Alouatta palliata Erythrocebus...

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