The Human LineTechnology Oldowan toolkit 2.6 million years agoMajor Sharp flakes and choppers let early humans butcher carcasses and crack bones for marrow. ▲ MattersSaveShareTrace roots Longest chain: The Big Bang → First stars ignite → Supernovae seed heavy elements → The Sun forms → Earth forms → First oceans → First life → Photosynthesis evolves → Great Oxidation Event → Complex cells (eukaryotes) → Multicellular life → First animals → Cambrian Explosion → First vertebrates → Jawed fish → Fish walk onto land → The amniotic egg → The Great Dying → Dinosaurs appear → Asteroid ends the dinosaurs → Early primates → Apes split from monkeys → Human line splits from chimpanzees → Walking upright → First stone tools → Oldowan toolkit Community notesLoading notes… Learn more ranked by votesDocumenthumanorigins.si.eduEarly Stone Age tools (Smithsonian Human Origins) ↗Editor's pickBookNicholas Toth and Kathy Schick (eds.)The Oldowan: Case Studies into the Earliest Stone Age ↗Editor's pickBookJohn J. SheaStone Tools in Human Evolution ↗Editor's pickVideoSearch on YouTubeOldowan stone tools explained ↗Editor's pick