ANTH 140; Spring, 2021 Page 2 Lab 3: Station 2 - Homo ergaster versus Homo erectus versus Homo georgicus?? Compare and contrast the crania of African Homo ergaster (H. erectus from Africa), and Homo erectus from Asia. Focus on the following characters: 1) facial prognathism (projection) 2) roundness of neurocranium (braincase) 3) shape and robusticity of brow ridges 4) presence and development of sagittal keel (ridge along the back of the cranium) 5) overall robusticity (muscle attachments, thickness of cranial bones, etc.). Which do you think is more like the modern human? Now look at the Dmanisi hominin. Do you think that this specimen belongs to one of these two species (H. erectus or H. ergaster)? Which one? Why or why not? Homo ergaster (Labeled as Homo erectus on the Smithsonian website): https://3d.si.edu/object/3d/homo-erectus-cranium:8b87e356-aOfe-44ee-9800-9edea91c358c Homo erectus: https://3d.si.edu/object/3d/homo erectus-cranium: 14eca898-febe-40a9-a21a-d4bddGeede7f Modern Human (Homo sapiens): https://3d.si.edu/object/3d/homo-sapiens-cranium:09d681b2-5ae9-44a8-b444-8e31bb40305e Dmanisi hominin: https://3d.si.edu/object/3d/homo-erectus-cranium:0bid7e98-3dd0-4614-93d7-a2ae3cc9b11c