-
Period: 543 BCE to 252 BCE
PALEOZOIC ERA
-
Period: 543 BCE to 490 BCE
Cambrian
-
520 BCE
Cambrian
*A large scale global warming trend.
* Trilobites fossil discovered
* -
Period: 490 BCE to 443 BCE
Ordovician
-
475 BCE
Ordovician
*Proliferation of life in marine ecosystems
*Sea levels were very high
*The weather was warm -
Period: 443 BCE to 417 BCE
Silurian
-
435 BCE
Silurian
*The Earth entered a long phase of warm greenhouse
* Glaciers melting cause sea levels to rise
*The appearance of the first terrestrial organisms : plants
*An extinction of small marine species -
Period: 417 BCE to 356 BCE
Devonian
-
390 BCE
Devonian
*A large number of new species was appeared
*Those that already existed were evolved to more advanced ones
*The first species of land animals emerged
*Many species became extinct -
Period: 354 BCE to 289 BCE
Carboniferous
-
300 BCE
Carboniferous
*Formation of new mountains and ranges
*The decrease in sea level due to coal
*Appearance of first reptiles
*Formation of the pangea -
Period: 290 BCE to 252 BCE
Permian
-
270 BCE
Permian
*There was a shrinkage of the swamps
*Insects evolved to their modern appearance
*Mass extinction of rugose corals, trilobites, plants…
*Reptiles diversity and are abundant -
Period: 251 BCE to 66 BCE
MESOZOIC ERA
-
Period: 250 BCE to 206 BCE
Triassic
-
230 BCE
Triassic
*The formation of deserts and evaporites
*Dinosaurs and mammals appeared
*The climate was generally hot and dry.
*20% of marine animals disappeared
*The rupture of Pangea and the opening of the Sea of Tethys. -
Period: 206 BCE to 144 BCE
Jurassic
-
180 BCE
Jurassic
*Giant dinosaurs and marine reptiles dominate
*Flying reptiles, birds and modern type insects appear
*The predominant forests were coniferous -
Period: 144 BCE to 65 BCE
Cretaceous
-
90 BCE
Cretaceous
*The first flowering plants appeared
*The fracture of the Supercontinent of Pangea began.
*Extinction of dinosaurs and ammonites
*Primitive mammals and birds increase -
Period: 66 BCE to 10
CENOZOIC ERA
-
Period: 66 BCE to 10
Tertiary
-
30 BCE
Tertiary
*A major climate transition occurred
*The emergence of grass species
*Of the dinosaurs, only the birds remained.
*Among the new species appeared the large flightless birds -
Period: 2 BCE to 10
Quaternary
-
6
Quaternary
*Rise of human civilization
*Glaciers formed (the glaciation)
*An increase in biodiversity
*Development of mammals