Geological time

GEOLOGICAL TIME

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  • Period: 541 BCE to 252 BCE

    PALEOZOIC ERA

    The Paleozoic is characterized by the great development and reproduction that species with shell or exoskeleton had.
  • Period: 541 BCE to 485 BCE

    Cambrian

    Produced the most intense burst of life ever known. The Cambrian explosion gave rise to an incredible diversity of life on earth that includes many of the major groups of animals present today.
  • Produced the most intense burst of life ever known
    500 BCE

    Produced the most intense burst of life ever known

  • Period: 485 BCE to 444 BCE

    Ordovician

    It promoted the development of organisms that deposited calcium carbonate in their shells and hard parts.
  • In it, approximately 60% of marine species perished.
    470 BCE

    In it, approximately 60% of marine species perished.

  • Period: 444 BCE to 419 BCE

    Silurian

    It is characterized because the level of the oceans was high, which means that there is an extensive record of marine sediments on all continents.
  • There was a mass extinction that severely affected marine life
    440 BCE

    There was a mass extinction that severely affected marine life

  • Period: 419 BCE to 359 BCE

    Devonian

    Oil and gas fields were formed in some areas.
  • Emersion of large land areas.
    410 BCE

    Emersion of large land areas.

  • Period: 359 BCE to 299 BCE

    Carboniferous

    It is characterized by the fact that large areas of forests were successively buried, in what is known as the collapse of the Carboniferous rainforest, giving rise to carbon strata.
  • the orogeny occurs that gives rise to the formation of the megacontinent Pangea.
    330 BCE

    the orogeny occurs that gives rise to the formation of the megacontinent Pangea.

  • Period: 299 BCE to 252 BCE

    Permian

    It witnessed the diversification of the first amniotes into the ancestral groups of mammals, turtles, lepidosaurs, and archosaurs.
  • there were important climatic changes
    290 BCE

    there were important climatic changes

  • Period: 252 BCE to 66 BCE

    MESOZOIC ERA

    Known zoologically as the age of dinosaurs. Mammals, birds and angiosperms or flowering plants also appear in this era.
  • Period: 252 BCE to 201 BCE

    Triassic

    The Triassic climate was generally hot and dry, and resulted in the formation of deserts and evaporites.
  • Appearance of the first mammals.
    220 BCE

    Appearance of the first mammals.

  • Period: 201 BCE to 145 BCE

    Jurassic

    This period is characterized by the hegemony of the great dinosaurs and the split of Pangea into the Laurasia and Gondwana continents.
  • The hegemony of the great dinosaurs
    180 BCE

    The hegemony of the great dinosaurs

  • Period: 145 BCE to 66 BCE

    Cretaceous.

    In the Lower Cretaceous, a revolutionary event took place in the botanical world: angiosperms appeared, that is, plants with flowers, seeds and fruits.
    There were species of ammonites, fish of various sizes, and large aquatic reptiles, such as elasmosaurids (very long-necked plesiosaurs), mosasaurs, both ferocious predators. The first turtles, the first rays and the first sharks also made their appearance, replacing the extinct ichthyosaurs.
  • A period of low diversity was unleashed in the tropics of America.
    100 BCE

    A period of low diversity was unleashed in the tropics of America.

  • Period: 66 BCE to 20

    CENOZOIC ERA

    It is considered the era of mammals. It is one of the most iconic eras since it marked the end of the age of dinosaurs.
  • Period: 66 BCE to 2 BCE

    Tertiary

    The period began with the disappearance of non-avian dinosaurs in the Cretaceous-Paleogene extinction event, at the beginning of the Cenozoic Era, and lasted until the beginning of the Quaternary glaciation at the end of the Pliocene.
  • Flowering and subsequent extinction of many large mammals.
    40 BCE

    Flowering and subsequent extinction of many large mammals.

  • Period: 2 BCE to 20

    Quaternary

    It was during the Quaternary when Homo sapiens appeared on Earth. In turn, large species, both plant and animal, became extinct, and birds and mammals were the vertebrates that dominated the Earth.
  • Homo sapiens appeared, in turn, large species, both plant and animal, became extinct, and birds and mammals were the vertebrates that dominated the Earth.
    1 BCE

    Homo sapiens appeared, in turn, large species, both plant and animal, became extinct, and birds and mammals were the vertebrates that dominated the Earth.