PSYC 3100 Study Guide - Midterm Guide: Homo Erectus, Inbreeding Avoidance, Homo Ergaster
23 Nov 2016
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Chapter 3, lecture 5: the geological timescale as it pertains to human evolution. 4. 6 billion years ago to the present day, with the emergence of life 3. 5 billion years ago, and humans 200,000-150-000 years ago. We are currently in the holocene epoch (quaternary period, cenozoic era) Dinosaurs went extinct between the cretaceous period (mesozoic era) and the tertiary period (cenozoic era) Kt boundary: refers to chalk, there is a thin layer in the earth, denotes mass extinctions: tree of multicellular life. Cladograms: shows extant species and their lineages, multicellular phylogenetic trees, illustrates the evolutionary history of an organism: tree of primates. New world: central and south america, parts of mexico. Squirrel monkeys, marmots, tia monkeys, mouse lemurs, lemurs, galagos. Day time hunters, requires good depth perception, still tree-dwellers. Great apes: gorillas, chimps (pan troglodytes), bonobos (pan paniscuss), orangutans. Hominins: living humans and the fossil species they are most closely related to: defining characteristics of primates.
