LAB 11: HOMO ERECTUSToday’s Goals• Assess cranial and postcranial traits of Homo erectus.• Evaluate the behavioral change in Homo erectus in light of stone tool technologies.Sites & Specimens“Classic” Homo erectusHomo erectus / ergasterHomo heidelbergensisPetralonaHomo erectus Cranial CharacteristicsSagittal KeelThick BrowridgeH. erectusH. sapiensHomo erectus Cranial CharacteristicsSloping Frontal BoneH. erectusAngled Occipital RegionH. sapiensHomo erectus Cranial CharacteristicsGreatest Breadth Low on SkullH. erectusH. sapiensGreatest Breadth middle of skullHomo erectus Cranial CharacteristicsMarked Postorbital ConstrictionNuchal TorusH. erectusH. sapiensMeasuring Homo erectus CraniaCranial Length Postorbital Constriction2. Measure the maximum breadth.1. Measure the minimum breadth.3. Divide value “1” by value “2”.4. Multiply x 100 to obtain the %difference between the two parts.12Measure the maximum length between:1 22. Posterior-most point of the occipital1. Front of the supraorbital torusPlatform EdgeCutting EdgeAnatomy of a FlakeComparison of Oldowan & AcheuleanRefit SequencesFor each 3D printed sequence of refitted flakes and core, each person at the table should take turns doing the following:• Remove each flake from the core in sequence order, paying attention to the rotation of the core between platforms with each flake removal. Each point of percussion is indicated by a black “x” on each striking platform.• Examine the population of flakes produced.• Reassemble the core by reversing the order of removals.Questions to answer after examining both refits (replacing “5. Movius Line Question” on p. 143 and using p. 144 if necessary):A. How many times is the core rotated to exploit a new striking platform for making flakes during the reduction process?i. For the Oldowan reduction:ii. For the Acheulean reduction:B. How complicated are the two reduction sequences when compared to each
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