CAS AR 100 Lecture Notes - Lecture 3: Homo Rudolfensis, Denisovan, Oldowan
25 Jan 2018
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Document Summary
Anthropoids: all primates (monkeys and great apes and their ancestors), hominins and humans. Hominoids: all great apes (gorillas, orangutans chimpanzees, bonobos, gibbons, hominins and humans. Hominins: all our fossil ancestors and us (ardipithecus, australopithecus, homo) All of asian and europeans have this gene. Fossils become rarer as we go back in time. Needed tectonic activities for us to have been able to find her fossil. 6 m. y. a: last common ancestor with chimpanzees and bonobos. Fossible bone fragments and teeth found in ethiopia, awash valley. Bipedal: walked upright and tree climbing (opposable big toe) Reduced canine teeth: omnivore (more variety of fibrous foods than chimpanzees: No brain size change for several million years. Australopithecines: 4+ million bp to 1. 5 m. y. a. No development of bigger brain: flat line brain development for 2. 5 milion year. (350- Teeth white=all are a. afarensis. (this is a different view) Hadar, 19 4: (cid:281)lucy(cid:282) female a. afarensis (3. 2 m. y. a) Hadar, 1994: male a. afarensis skull (3 m. y. a)
