ANT 2000 Lecture Notes - Lecture 55: Homo Ergaster, Prognathism, Brain Size
Document Summary
Sahelanthropus (7-6 mya) lots of ape feats, but foramen magnum under skull. 3. 6 mya footprints werer closer and more in line, indicative of bipedalism. Some members of this group likely ancestors of humans. Paranthropus as hypervegetarian robust feat. to process tough fibrous foods: large palate massive molars saggital crest thick enamel massive cheek bones. Were there multiple homo species (related to hailis) Or was ruldofensis a part of habilis. Used to be thought of as a direct descendant of homo habilis, however habilis existed until 1. 4 million yrs ago and yet erectus first appeared 1. 8 mya. Arose during volatile climate conditions that characterized the pleistocene. Physically and culturally variable across vast range (first hominin to leave africa) Larger than homo habilis, but body proportions similar to modern humans, including brain size (1000cc) Cranial features: low forehead pronounced browridge large anterior teeth sagittal ridge nucal torus pentagonal rear view.
