-
541 BCE
Arthropods
Many marine invertebrates with external squeletons -
Period: 541 BCE to 252 BCE
Palaeozoic 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
-
485 BCE
Algaes and fish changes
Widespread marine algaes and fish without jaws -
Period: 485 BCE to 444 BCE
Ordovician
-
444 BCE
First land plants
Appearing of the first plants out of the water -
Period: 444 BCE to 419 BCE
Silurian
-
419 BCE
Anphibians
Anphibians appeared with more diversity of fishes -
Period: 419 BCE to 359 BCE
Devonian
-
359 BCE
Reptiles and giant fern forests
Reptiles appeared and there are bigger plants -
Period: 359 BCE to 299 BCE
Carboniferous
-
299 BCE
More reptiles
A really big diversity of reptiles -
Period: 299 BCE to 252 BCE
Permian
-
252 BCE
Dinosaurs and mammals
First dinosaurs and mammals appeared -
Period: 252 BCE to 66 BCE
Mesozoic Era
The Mesozoic Era is known as the age of the dinosaurs because it was during this period that these gigantic animals populated The Earth. -
Period: 252 BCE to 201 BCE
Triassic
-
201 BCE
First flying and aquatic reptiles
Gymnosperm plants dominate the Earth's surface, first birds appeared and even more dinosaurs diversity (Aquatic and flying new species) -
Period: 201 BCE to 145 BCE
Jurassic
-
145 BCE
Dinosaurs extinction
First plants with flowers appeared and dinosaurs and ammonites have become extincted -
Period: 145 BCE to 66 BCE
Cretaceous
-
66 BCE
Diversification of mammals
Mammal species could survive and evolve -
Period: 66 BCE to 50
Cenozoic Era
The Cenozoic era is the geological era that began about 66 million years ago and extends to the present day, the third and last era of the Phanerozoic eon and follows the Mesozoic era. -
Period: 66 BCE to 2 BCE
Tertiary
-
2 BCE
Human beings
Human beings appeared and there was a glaciation in the Northern Hemisphere -
Period: 2 BCE to 50
Quaternary