ANTH 1102 Lecture Notes - Lecture 9: Angling, Adaptive Radiation, Omnivore
27 Sep 2016
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6 mbp: orrorin tugenensis: found in kenya, they found bones from five individuals, were capable of walking around on two legs, could also climb trees well, brain size of a chimp, lived in a wooded area, not rainforest. 4. 4 mbp: ardipithecus ramidus: found fossils from 28 individuals, includes bones from skull, and big bones because predators can"t chew them. Finding smaller bones is very rare: they did find hand bones and foot bones. There have been 4 major ice ages and the first happened 7 mbp. There"s a lot of species of plants and animals that go extinct and punctuated equilibrium. We see the first hominin"s at this point. Before this ice age africa had been covered in forests. The hominins that are in this new environment go through new changes: the feeding system. Teeth, jaws, and digestive system begin to change. Dentition; dental formula changes, number of teeth in your mouth; teeth in one quarter in your mouth.
