CAS AN 102 Study Guide - Final Guide: Upper Paleolithic, Femur Neck, Mandibular Symphysis
1 May 2021
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Chapter 19 - early primates and the first (maybe) hominins. Plesiadapiforms = primate like animals during the paleocene fell into this category and makes up 30% of the fossils in some assemblages. Paleocene-eucocne thermal maximum (warm and humid) and n. american and europe are connected. First appearance and diversification of ape and monkey ancestors (anthropoids) Cooler and drier climate, expansion of grasslands, reduction of forests. Primates disappear form n. america and europe, which separate are now separated. Early miocene = africa (mostly kenya and uganda) + inhabited tropical forest and woodlands. Adaptive radiation of apes into europe and asia. Sivapithecus = differs from other miocene hominoids in the same way that african apes differ from orangutans. Temps warmer in early miocene, tropical forests expand in middle latitudes. Roughly 16 mya, global temps drop, woodlands/bushlands/savannahs spread. Africa connected to eurasia, animals migrate both ways. Long, flexible vertebral column, narrow rib cage = pronograde rather than suspensory.
