Life On Earth

By Clarissa.renee_1212
  • 3650 BCE

    Earliest evidence of life

  • 2500 BCE

    first photosynthetic/autotrophic bacteria appear

  • 2200 BCE

    first great extinction, oxygen producing bacteria "posion" the enviroment, age of aerobic organisms begins

  • 1750 BCE

    first eukaryotes appear

  • 650 BCE

    multicellular life appears

  • 650 BCE

    sexual reproduction begins

  • 550 BCE

    "Cambrian Explosion"

    huge diversity and complexity increase in a relatively short period of time
  • 505 BCE

    marine invertebrates appear

  • 438 BCE

    great extinction, fish appear

  • 408 BCE

    land plants appear

  • 360 BCE

    great extinction, amphibians appear

  • 286 BCE

    reptiles appear

  • 245 BCE

    great extinction, seed plants appear

  • 208 BCE

    great extinction, mammals and dinosaurs appear

  • 144 BCE

    primitive birds appear

  • 66 BCE

    great extinction, dinosaurs disappear

  • 60 BCE

    primates appear

  • 38 BCE

    anthropoids appear

    (day-- active primates)
  • 37 BCE

    primitive horses appear

  • 2 BCE

    historical date of jesus birth

  • 1 BCE

    humans appear

  • 2

    USA's declaration of independence