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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. -
500 BCE
Produced the most intense burst of life ever known
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Period: 485 BCE to 444 BCE
Ordovician
It promoted the development of organisms that deposited calcium carbonate in their shells and hard parts. -
470 BCE
In it, approximately 60% of marine species perished.
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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. -
440 BCE
There was a mass extinction that severely affected marine life
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Period: 419 BCE to 359 BCE
Devonian
Oil and gas fields were formed in some areas. -
410 BCE
Emersion of large land areas.
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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. -
330 BCE
the orogeny occurs that gives rise to the formation of the megacontinent Pangea.
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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. -
290 BCE
there were important climatic changes
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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. -
220 BCE
Appearance of the first mammals.
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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. -
180 BCE
The hegemony of the great dinosaurs
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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. -
100 BCE
A period of low diversity was unleashed in the tropics of America.
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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. -
40 BCE
Flowering and subsequent extinction of many large mammals.
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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. -
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.
