ANTH 001 Lecture Notes - Lecture 12: Homo Habilis, Homo Erectus, Brain Size
15 Jul 2020
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Document Summary
H. habilis is when the brain size saw a sudden spike (encephalization) The genus homo had a relatively larger brain: more evidence of socio-cultural behaviours, tools, aret, etc. The oldest hominin with modern human-like proportions. Increased body size, longer legs shorter arms. Even larger brain (50% larger than australopithecines, 60% size of the modern h. sapiens) Erectus was thought to be the first hominim species to leave africa (1. 9mya) Difference between the early hominins and early homo. Brain expanded from early hominins to early homo. For 2% of your body"s weight, brain requires 20% oxygen and. Due to an increase in more nutritious food (meat/fats) and cooking (which allows more nutrients to be more easily absorbed) Due to the abundance of nutrients available, brains got larger and teeth and intestines reduced in size (didn"t need them to be massive) Brain size sort of approximates skill, but it is mainly up to the way it is organized to facilitate information processing.
