lab 15.docx - gracile Definition having thin light...

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gracileDefinitionhaving thin, light musculature and bonerobustDefinitionhaving thick, dense, heavy musculature and bonecranial capacityDefinitionthe amount of space available in the cranium for the brainprognathicDefinitionhaving a projecting or protruding facesexual dimorphismDefinitionthe physical differences between adult males and adult females of a species.sagittal crestDefinitiona ridge of bone along the midline of the cranium that allows for the attachment of extra-large chewing musclesOldowan technologyDefinitionthe earliest stone tool technology, characterized by chopper and flake tools.chopperDefinitiona large, heavy stone tool with a sharp edge where small pieces of rock have been removed.flakeDefinitiona small piece of rock that has been removed from a larger rock and can be used as is or further modified into a specialized tool.
direct percussionDefinitiona process of stone tool production where two rocks are hit directly together in order to break off flakes.

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