Lecture 10 Ch 11 - Lecture 10 Chapter 11: The Origins...

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Lecture 10 Chapter 11: The Origins Evolution, and Dispersal of Modern People
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Fair degree of homogeneity in Homo erectus specimens geographically and temporally for about 1 million years There is some reduction in teeth and face size and a small increase in cranial capacity over this period About 500,000 years ago we begin to see a transition to Archaic Homo sapiens Disagreement over how to class some fossils between 400,000 and 200,000 years ago
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archaic H. sapiens/Homo heidelbergensis
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From the Larsen text
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Implications of the binomial nomenclature ( Genus and species ): A) Archaic Homo sapiens/H. sapiens heidelbergensis = our species (but with skeletal and developmental/cognitive/linguistic differences) B) Homo heidelbergensis = a different species from us within the genus Homo (some of whom may have ‘speciated’ to become anatomically modern H. sapiens ).
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branches and extinctions with replacement by 1 lineage of anatomically modern humans?
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-Archaic H. sapiens/H. heidelbergensis in Africa from c. 350,000ya (Kabwe, Zambia) down to c. 200,000ya -Archaic H. sapiens from Java, Indonesia, from c. 350,000ya -Archaic H. sapiens from Jinniushan , northeastern China – c. 200,000 ya - H. antecessor/ Archaic H. sapiens/H. heidelbergensis in Europe -Archaic Homo sapiens ? from Mauer, Germany c. 500,000 ya -Archaic Homo sapiens ? from Boxgrove, England c. 524,000- 475,000 ya -Schöningen, Germany – long spears and animal bones dating c. 400,000ya! -Archaic Homo sapiens from Sima de los Huesos, Spain c. 350,000-300,000 ya
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Archaic Homo sapiens Mixture of older & more recent traits: -supraorbital torus (browridge) -low cranial vault (not a high forehead) -thinner cranial bones -cranial capacity within range of modern H. sapiens
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Archaic H. sapiens/H. heidelbergensis: increased parietal breadth (so the skull no longer looks pentagonal from the back – the base is no longer the widest point), decrease in the size of molars, decrease in cranial and postcranial robusticity From about 400,000 ya - marked increase in cranial capacity - well within the range of modern humans.
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Trend towards greater cranial capacities after c. 400,000/300,000 ya
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Upper Palaeolithic (c. 40,000 ya – 10,000 ya) later Homo sapiens various Middle Palaeolithic (c. 500,000/300,000 ya – 40,000 ya) • early Homo sapiens c. 200,000-40,000ya various Homo neanderthalensis 170,00/130,000-30,000ya Levallois/ Mousterian Homo heidelbergensis c. 0.5mya-130,000ya Levallois/ Acheulean Lower Palaeolithic (c. 2.6 mya – 500,000/300,000 ya) Homo erectus 1.9 - 0.5mya Oldowan + Acheulean Homo habilis 2.5-1.8mya Oldowan Australopithecus garhi c. 2.6-2.5mya Oldowan
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Lecture 10 Ch 11 - Lecture 10 Chapter 11: The Origins...

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