ANT 251 Lecture Notes - Lecture 1: Sagittal Crest, Paranthropus, Frontal Lobe
Document Summary
11:46 am: comp to australopithecus, more robust skull than australopithecus. Same body: different skull, means different niche and diet, more hard food than au, but still generalized, not ancestral to humans, descendants of chimps. Location and time: east and south africa, anatomy, slanted, flat, wide faces, projecting zygomatic, attachment for masseter m, allow chewing strength, sagittal crest, attachment for temporalis m, more surface area for chewing, large molars/ premolars. P. aethiopicus: time/ location, ethiopia, kenya, 2. 5-2. 3mya, anatomy, 400cc. Specific black fossil found that showed evidence of these features: teeth and skull features relate to heavy chewing. Subnasal prognathism: elongation of under the nose and mouth to make it more flat, cranial base primitive/ smaller frontal lobe than expected. P. boisei: time/ loc, tanzania, 2. 2-1. 3, anatomy. Large flat face: 525cc, extremely robust, projecting muzzle. Small incisors /large molars with thickest enamel: tooth wear at early age, can look at wear pattern and saw they ate some chewy roots as well.
