ANT100Y1 Lecture 6: Lecture 6
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Document Summary
General morphology for some key fossil hominins. Partial piece of a tibia provides strong evidence for bipedality. Primitive (ape-like) cranial morphology and a derived (human-like) post cranial morphology. Single, sexual dimorphic species, or two separate species. Fossilized footprints made by bipedal hominins that walked across fresh ash for a long distance. Big toes hardly diverged from the rest of the foot, unlike gorillas. Heel strike followed by toe off, the way humans walk. Selam (peace); fossilized skull and skeletal remains of a 3-year old female. (3. 2. Hyoid bone: throat bone, where the voice box sits. Foot and lower limb bones provide evidence for bipedal locomotion. Long and curved manual phalanges indicate importance of arboreal behaviour. Equally adept on trees and on land. Average brain size: 458 cc (similar to that of modern chimpanzees) Dental features differentiate from those in australopithecus afarensis. Post cranial are similar to those in australopithecus afarensis. Remarkably primitive hominin at such a late date.
