ARCH 131 Lecture Notes - Temporal Muscle, Phalanx Bone, Masseter Muscle
5 Mar 2014
School
Department
Course
Professor
Document Summary
1: 3. 7-2. 9 mya, east african species, 415 cc average brain size, typical ape characteristics, canine diastema- unique feature. Laetoli footprints (cid:240) obligate bipedalism (cid:240) similar to modern humans (cid:240) Lucy : 3. 2 mya, partial skeleton, found in 1974, hadar, ethiopia. Selam : 3. 3 mya, mostly complete skeleton, 3 year old female child, from hadar region, discovered in 2000 (cid:240) afrensis spent a lot of time on the land for foraging. To hunt, they would stay on the ground, but when the predator showed up, they would go up the trees to avoid being eaten up or attacked. Ples : 435 cm3- largest skeleton found, zygomatic arch (cheek bone) pushed forward, large nasal aperature. Afarensis and africanus are not separate species, but rather subspecies. 4: south african species, malapa, ~1. 95-1. 98 mya, height of a 8-9 years old modern human boy, much more recent than afarensis or africanus. Robustus and boisoi are similar, but the teeth are different.
