ANTA01H3 Lecture Notes - Lecture 5: Sagittal Crest, Oldowan, Laetoli
Document Summary
Hominin, (cid:862)the group that i(cid:374)cludes all those species (cid:373)ore closely related to ho(cid:373)o sapie(cid:374)s tha(cid:374) to a(cid:374)y livi(cid:374)g great ape(cid:863) Unique human features: extremely large brain, walking on two limbs, small canines, flat faces, modify raw materials into tools types, chin, learn and invent language. Possible scenarios for human evolution: brain first. The brain is most distinctive so they must have been evolving for the longest time: bipedalism first. Walking on hind limbs first, the hands were free for tool use leading to brain expansion. Piltdown man turns out to be a hoax: fluorine dating confirmed it. Tapho(cid:374)o(cid:373)y, (cid:862)the study of all of the eve(cid:374)ts fro(cid:373) orga(cid:374)is(cid:373)"s death to its discovery as a fossil(cid:863) 3 clusters of early hominins: pre-australopiths (7-4. 4 mya) Anteriorly positioned foramen magnum: hole for which spinal cord and brain connect. Short broad pelvis the iliac blades face towards the sides like humans: allows the lesser gluteal muscles to as abductors of the hip rather than extensors.