ANTHROP 3409 Lecture Notes - Lecture 4: Tapetum Lucidum, Prehensile Tail, Mandibular Symphysis
25 Jan 2017
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January 19 & january 24: general anthropoid features, larger, diurnal, lack tapetum lucidum, orbits more forward facing, reduced snout, larger brain, fused frontal bone, fused mandibular symphysis, postorbital closure. Ii: platyrrhine = flat noses with wide nostrils, catarrhine = downward noses with convergence at midline. General platyrrhine features: small medium sized monkeys, dental formula = 2. 1. 3. 3 (most, purely arboreal, some have specialized prehensile tail, ring-like auditory bulla. The pithecines: tusk-like canines; prognathic incisors, eat hard fruits and nuts, saki monkeys; uakari, the aotines, owl monkey, only nocturnal anthropoid enormous eyeballs, perhaps response to predation pressure. The atelines: largest platyrrhine, all possess prehensile tail, limbs and trunk are ape-like, 4 genera, howler monkey, folivorous, huge mandible for space for hyoid bone, woolly monkey, spider monkey, woolly spider monkey/muriqui. The cebines: capuchins, highly intelligent, have prehensile tail but different than one found in atelines = independent.
