Evolution of time - 17 Stages

1) Archean Eon - About 3.5 B Years Ago - 1st Bacteria (Prokaryotes) 2) Proterozoic Eon - About 2 B Years ago - 1st Organelles (eukaryotes) 3) Proterozoic Eon - About 1 B Years ago - 1st Multicellular Organisms (algae, jellyfish, worms) 4) Palaeozoic Era - About 500 M Years ago - 1st fish 5) Palaeozoic Era - About 450 M Years ago - 1st land plants & Fungi 6) Palaeozoic Era - About 390 M Years ago - 1st Amphibians, insects & reptiles. Much of the land covered in fern forests (which later become coal) 7) Palaeozoic Era - About 250 M Years ago - 1st First mass extinction 8) Mesozoic Era - About 200 M Years ago - 1st mammals & Birds 9) Mesozoic Era - About 130 M Years ago - 1st flowering plants 10) Mesozoic Era - About 115 M Years ago - 1st dinosaurs 11) Cenozoic Era - About 65 M Years ago - 2nd Mass extinction, Dinosaurs die out 12) Cenozoic Era - About 55 M Years ago - 1st Modern mammals & birds 13) Cenozoic Era - About 35 M Years ago - 1st Grasses 14) Cenozoic Era - About 3 M Years ago - 1st Hominids 15) Cenozoic Era - About 200 K Years ago - Neanderthals & 1st Homo sapiens 16) Cenozoic Era - About 100 K Years ago - Humans colonise habitable land masses, 30 K Years ago - Neanderthals die out, leaving homo sapiens as only species of humans 17) Cenozoic Era - About 20 K Years ago - Agriculture begins