ANT101H5 Lecture Notes - Lecture 12: Swartkrans, Handedness, Paranthropus Robustus
Document Summary
Specific characteristics of a. afarensis (in comparison to the s/ african gracile species) Small cranial capacity 310-500 cc (average 420 cc) Relatively large canines (compared to modern humans) Ape like shaped dental arcade (parallel rows) Estimated to be 3-4 years of age at death. Development more similar to apes than humans. Specific characteristics of a. africanus (in comparison to a. afarensis) Massive flat molars, with crowding of the front teeth. Lake turkana, kenya, east africa (1985) 2. 5 mya. Compound crest: meeting of the sagittal crest with the nuchal crest. First find: olduvai gorge (1959) by mary leakey. Originally called zinjanthropus boisei by louis leakey. Thought to be anywhere from 1. 8 - 1 mya. Body size similar to a. africanus (32-40 kg) Face positioned high with a low forehead. Sagittal crest - smaller than a. boisei and compound as in a. aethiopicus. Cranial capacity of approx 530 cc (450-550 cc) There are at least 2 seperate hominin lines between 3-1 mya.
