ANTH 1020 Lecture Notes - Lecture 10: Brain Size, Shock Absorber, Laetoli
Document Summary
Excavated fossils from the olduvai gorge in the great rift valley. What are the two obligate behaviors of hominins? bidpedal locomotion and nonhoning chewing. What type of rock can be radiometrically dated? volcanic. What are the things that anthropologists claim make us human: bipedalism, nonhoning chewing, dependence on material culture, speech, hunting and cooperation, domestication of plants and animals. How do the masticatory muscles of a human differ from a gorilla? the temporalis muscles in a human are vertically oriented for crushing power, whereas in a gorilla they are horizontally oriented for slicing. Do humans or apes have thicker enamel? humans. What did darwin propose was the basis of ape/human divergence? hunting. Reno little sexual dimorphism(biggest little city on earth) What do human origins hypotheses have in common positive adaptation e. g. bipedality ability to run longer distance. Sahelanthropus tchadensis, orrorin tugensis, aridipithecus ramidus, and ardipithecus kadabba.
