Lecture title - History 1 Early hominins and bipedality
7 important questions on Lecture title - History 1 Early hominins and bipedality
Describe the Savanna hypothesis (6)
Woodland changes to Savanna
Apes forced to adapt to open landscape
Walk on 2 legs
Hands free for tools
Increases brain size
Who is the last common ancestors humans share with chimpanzees
What type of locomotion do fossil hominids show
'Orthograde posture' -> upright climbing
Danuvius guggenmosi (11.6 Ma) -> maybe bipedal?
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Describe the specialisation trap (climate, old world, african, hominins)
Old world monkeys -> generalists, more successful
African apes: escape partly by terrestrial way of life
Hominins: escape by bipedalism and reliance on culturally transmitted technology
Describe Sahelanthropus (period, found bones, pedality)
Femur and skull (both damaged)
Unsure if hominid or hominin
Unknown if bipedal
Found together with otters, crocodiles, kob and hippos
Describe Ardipithecus (period, anatomy, posture, pedality, environment)
Well represented anatomy
Erect posture
Bipedal unlike extant apes: walking on branches, climbing, short distances terrestrial
Environment: wooded biotope grading to savanna, bipedalism originating in arboreal context and used terrestrially
Describe Australopithecus afarensis (period, location, pedality)
East africa
Bipedal
(Lucy -> died from falling out of tree likely)
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