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Period: 541 BCE to 252 BCE
PALEOZOIC ERA
PALEOZOIC ERA: began 541 million years ago and ended about 252 million years ago. It covers the appearance of animals with shells or exoskeletons.
The Paleozoic era is divided into 6 periods. -
Period: 541 BCE to 485 BCE
CAMBRIAN PERIOD
The Cambrian Period saw the most intense outburst of life ever known, this led to many new species of animals.
Complex multicellular organisms also began to appear. -
530 BCE
CAMBRIAN PERIOD
The biggest explosion of life. -
Period: 485 BCE to 443 BCE
ORDOVICIAN PERIOD
The ORDOVICIAN PERIOD is characterized by the rise in sea level, this caused a lot of life and new ecosystems in the sea.
The Ordovician period was created to resolve a conflict between two geologists who disagreed with the length of years of the Cambrian and Silurian periods.
in addition there was an ice age that lasted approximately 1.5 million years. -
459 BCE
ORDOVICIAN PERIOD
Increased life in marine ecosystems. -
Period: 443 BCE to 419 BCE
SILURIAN PERIOD
The main characteristic of this period is the warming of the Earth after the glaciation of the Ordovician Period and the recovery of life after the mass extinction (animals, plants ...).
there was a long warm greenhouse phase. -
428 BCE
SILURIAN PERIOD
The warming of the earth after the glaciation of the Ordovician period. -
Period: 416 BCE to 359 BCE
DEVONIC PERIOD
The first amphibians emerged At the end of the period there was a mass extinction that seriously affected marine life. oil and gas deposits formed in some areas. -
410 BCE
DEVONIC PERIOD
The appearance of the first amphibians. -
Period: 359 BCE to 299 BCE
CARBONIFEROUS PERIOD
A lot of mineral coal was produced in the world, amphibians dominated the world and gave rise to the first reptiles and there was a lot of volcanic activity. -
330 BCE
CARBONIFEROUS PERIOD
Amphibian development begins giving rise to reptiles. -
Period: 299 BCE to 251 BCE
PERMIAN PERIOD
In this last stage of the Paleozoic, the first mammals and turtles appeared.
The climate of that period caused a drought and aridity, causing the glaciers to recede and creating many swamps. -
250 BCE
PERMIAN PERIOD
I hit a meteorite that killed 96% of marine life -
Period: 250 BCE to 66 BCE
MESOZOIC ERA
The MESOZOIC ERA: It began 250 million years ago and ended 66 million years ago, it is known as the era of the dinosaurs, since in that period these gigantic reptiles dominated the earth. -
Period: 250 BCE to 201 BCE
TRIASSIC
The climate was quite hot and dry and deserts and evaporites were created at the end of this period, dinosaurs began to appear. -
230 BCE
TRIASSIC
The appearance of the dinosaurs. -
Period: 200 BCE to 145 BCE
JURASSIC
The climate was quite hot and dry and deserts and evaporites were created at the end of this period, dinosaurs began to appear. -
180 BCE
JURASSIC
The largest dinosaurs appeared. -
Period: 144 BCE to 66 BCE
CRETACEOUS
It is the last period of the Mesozoic era, the dinosaurs ruled the earth throughout this period, but it was also where they were extinguished by the asteroid and 75% of the planet lost its life. -
100 BCE
CRETACEOUS
This was the period where dinosaurs reigned. -
Period: 66 BCE to 3 BCE
CENOZOIC ERA
CENOZOIC ERA: This era began with the extinction of the dinosaurs approximately 66 million years ago, it is known as the Age of mammals, because the development of mammals began, and in this era the human being made its appearance. -
Period: 66 BCE to 28 BCE
PALEOGENE
the primates and the ancestors of today's carnivores appeared and the development of modern plant species and became the most diverse fauna on earth. -
30 BCE
PALEOGENE
The super continent Pangea separates and the continents are formed. -
Period: 23 BCE to 3 BCE
NEOGENE
Mammals and birds develop quite a bit, the climate cooled down, causing the Quaternary glaciations, and the Hominids appeared in the Quaternary. -
9 BCE
NEOGENE
Great development in mammals and birds.