BIOLOGY 1M03 Lecture Notes - Lecture 9: Knuckle-Walking, Sexual Coercion, Quadrupedalism
12 Jul 2017
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The origins of violence: what are the social systems of. Adaptations for suspensory motion: short trunk and legs, long arms and ngers. Thursday, february 9, 2017: inward closing hook-like ngers, opposable thumbs, shoulder, wrists, and other joints more mobile, loss of tails; restructuring of muscles; strengthening of pelvic oor. Why didn"t bipedalism evolve more frequently in other. Lineages: our ancestors had suspensory locomotion which is uncommon, possibly, this ancestral feature pre-disposed to ape lineage to evolve bipedalism. Late miocene/pliocene primates: global cooling was associated with decreased rainfall and seasonality, including dry seasons, tropical rainforests shrank in size; dry woodland and grassland habitat expanded, ancestors of humans - the hominins - moved into grassland habitat. Hominids (4-6 million years ago: ancestral features of these fossils included, small molars, thin enamel, canines larger than in humans, large brow ridge, small branches relative to modern humans, derived features of these fossils included:
