Old Stone AgeLife & Evolution Denisovans c. 200,000 years agoNotable A human group known mainly from DNA; their genes help Tibetans survive at high altitude today. ▲ 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 → Genus Homo appears → Homo erectus → Homo heidelbergensis → Denisovans Community notesLoading notes… Learn more ranked by votesBookDavid ReichWho We Are and How We Got Here ↗Editor's pickBookSvante PääboNeanderthal Man: In Search of Lost Genomes ↗Editor's pickVideoSearch on YouTubewho were the Denisovans ↗Editor's pick