Evolution

The Evolution

By fionabv
  • 4500 BCE

    Earth's Formation

    Earth's Formation
    4.500 million years ago.
    The apparition of the earth was a very difficult and slow process.The christian tradition and other religions believe that God was the one who created Universe life in six days. This is known as creationism. But obviously this is a mythical explanation based on faith and not supported by scientiic evidence. Nowadays we know that the world was created by the big bang, about 13.800 million years ago.
  • 600 BCE

    Multicellular organisms. Cambrian life's explosion

    Multicellular organisms. Cambrian life's explosion
    600 million years ago.
    After the process of cell differentation we obtained multicellular organisms that had specialized cells. This organisms use the sexual reproduction and are more able to adapt to other environments and they can have more variety of species, creating the biodiversity.
  • 500 BCE

    First vertebrates

    First vertebrates
    500 million years ago.
    The vertebrates originated during the Cambrian explosion.
  • 200 BCE

    Dinosaurs and mammals coexist

    Dinosaurs and mammals coexist
    200 million years ago.
    Scientists found an animal that lived at the same time than dinosaurs.
  • 130 BCE

    Aparition Sapiens Sapiens

    Aparition Sapiens Sapiens
    130.000 years ago
    This is the latest event of evolution by the moment, all of us are Homo Sapiens Sapiens.
  • 65 BCE

    Dinosaurs extinction

    Dinosaurs extinction
    65.000 years ago.
    Nowadays, after all this time, the cause of the mass extinction of the dinosaurs is a scientific mystery.
  • 60 BCE

    Apparition Primates

    Apparition Primates
    60.000 years ago.
    At the beginning they were small animals but over time, they develope until they adapt to the environment.
  • 4 BCE

    The first organic molecules

    The first organic molecules
    4.000 million years ago.
    Redi, Needham, Spallanzani and Pasteur, made an experiments to prove how appeared the organic matter in life, but till Stanley Miller, didn't made his experiment, it wasn't completly sure than organic molecules came from inorganic ones.
  • 3 BCE

    Life appears. Prokaryotic cells

    Life appears. Prokaryotic cells
    3.500 million years ago
    After eukaryotic cells, appeared the first living organisms, that some of them were prokaryotics.
  • 2 BCE

    Aparition Homo Erectus

    Aparition Homo Erectus
    2 million years ago.
    After the apparition of primates, appeared the most older Homo that could walk, Homo Erectus.
  • 1 BCE

    Oxygen in the air

    Oxygen in the air
    1.800 million years ago.
    The oxygen disaster, was the first ever extinction, and a lots of photosynthetic bacterias died.
  • 1 BCE

    Fisrt Eukaryotic cells

    Fisrt Eukaryotic cells
    1.400 million years ago
    After the oxygen disaster, appeared the eukayotic cells, more complex cells, with the cell membrane and more organelles. At first they were unicellular.
  • 1 BCE

    Aparition Homo Sapiens

    Aparition Homo Sapiens
    300.000 years ago.
    After Homo Erectus, but before Homo Sapiens Sapiens.