BIOLOGY 1M03 Study Guide - Final Guide: Homo Heidelbergensis, Homo Erectus, Homo Rudolfensis

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1M03
• Professor: Jon Stone

Document Summary

Origins of homo: ~ 2. 3million years ago, africa, larger brains, smaller teeth, australopithecus limb proportions ie. long limbs, rapid development seen by looking at enamel (rate at which enamel is deposited) Homo habilis: (= human (male) handy", 1. 4-2. 3 mya. East & south africa: taxonomic diversity. Morphospecies concept you may see differences in the morphologies & therefore categorize them as different species (subjectivity) Trend: decreasing temperature, greater uctuations over time. Climate in which our lineage is evolving. Supra orbital torus large bone above the eye. Zygomatic arch cheek bones enlarged; wide face. Homo erectus: asia, shows differences morphospecies concept. Skull: ancestral: postorbital constriction, no chin (compared to humans), receding forehead, derived: less prognathic, larger brain, smaller jaws & teeth compared to other members, unique: brow ridge, occipital torus (fairly well-pronounced) Acheulean industry: mode 2, biface (hand axe, speci cally designed. Carcass processing: unchanged for ~1million years. Hunting or scavenging: probably were both.