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By PRJWJJÑFW
  • 3700 BCE

    Photosynthesis

    Photosynthesis
    It is beginning to be called cyanobacteria. It experienced a great evolutionary change, because it was able to obtain greater nutrition and released oxygen into the atmosphere.
  • 3700 BCE

    Origin of prokaryote

    Origin of prokaryote
    First living organism to move to the sea. Simple cell structure and its heterotrophic and anaerobic metabolism. They were nourished by the organic molecules of the environment.
  • 2500 BCE

    Eukaryotic cell

    Eukaryotic cell
    Eukaryotic cells give rise to mitochondria and chloroplast photosynthesis. The genetic material enveloped it and provided greater control of genetic expression.
  • 2500 BCE

    Multicellular organisms

    Multicellular organisms
    The association of eukaryotic cells created multicellular organisms. These same ones form the plants, the fauna, among others... The "Cambrian explosion", the body plans of the animals were limited.
  • 2500 BCE

    Sexual reproduction

    Sexual reproduction
    The unicellular organism originated, but it created multicellular organisms. By combining genetic material, it provided greater variability to the offspring.
  • 450 BCE

    The terrestrial plants.

    The terrestrial plants.
    Although at first they were very dependent on water, they soon diversified and established habitats far from rivers thanks to the acquisition of evolutionary innovations. The acquisition of a new seed reproduction system favored its dispersion.
  • 400 BCE

    Land animals.

    Land animals.
    The appearance of terrestrial plants meant the availability of food for certain animals that came out of the water and adapted to living on dry land. Arthropods developed internal respiratory structures and exoskeletons. Amphibians evolved from fish, and developed tetrapod locomotion
  • 252 BCE

    The amniote egg.

    The amniote egg.
    Its development was an innovation with macroevolutionary implications since it explains the success of amniote terrestrial vertebrates. The set of new embryonic envelopes provided the embryo with insulation, protection, food and a humid environment.
  • 200 BCE

    The mammals.

    The mammals.
    Although they did not reach great development until the extinction of the dinosaurs, a large number of ecological niches were made available to them, which favored their adaptive radiation.
  • 100 BCE

    The angiosperms.

    The angiosperms.
    They are characterized by great variability in their size, their flat and deciduous leaves in temperate climates, the development of reproductive organs in colored flowers, and the protection of the seed by a fruit.