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Period: 4600 BCE to 541 BCE
Precambrian
Guide fossil: Stromatolites.
Geological event: Formation of the lithosphere.
Climate event: The end of this era coincide with intense glaciations.
Type of enviroment: Aquatic. -
3800 BCE
1st life forms 4:10
They were procariotic and eucariotic life forms and they live in water. -
550 BCE
1st most complex life forms 9:07
Appear the soft-body animals in aquatic eviroments. -
541 BCE
Great explosion of life 21:10
Expansion of the animal live in the oceans and colonization of the land. -
Period: 541 BCE to 252 BCE
Palaeozoic
Guide fossil: Trilobite.
Geological event: Formation of Pangea.
Climate event: Global Warming.
Type of enviroment: Aquatic and terrestrial. -
443 BCE
Age of the fish 21:37
The fish appeared and they experimented a important expansion. -
400 BCE
First terrestrial plants (gymnosperms) 21:48
The first plants colonised the land. They were plants without flowers (gymnosperms). -
365 BCE
Amphibian age 22:13
The amphibians appeared and they had a great expansion. They live in water and in land. -
270 BCE
Age of the reptile 22:43
The reptiles appeared, later, the big reptiles dominated aquatic and terrestrials enviroments. -
Period: 252 BCE to 66 BCE
Mesozoic
Guide fossil: Ammonites.
Geological event: Fracturation of Pangea.
Climate event: There were glaciations.
Type of enviroment: Aquatic and terrestrial. -
140 BCE
1st angiosperms 23:22
Appeared the first plants with flowers (angiosperms). -
66 BCE
Age of the birds 23:39
The birds appeared and they had a important expansion. The birds came to the theropods, a group of carnivorous dinosaurs. -
Period: 66 BCE to
Cenozoic
Guide fossil: Nummulites.
Geological event: Formation of the polar ice caps.
Climate event: There were cold periods and hot periods
Type of enviroment: Aquatic and terrestrial. -
2 BCE
1st hominids 23:53
The first hominids appeared in Africa. -
1 BCE
1st Homo sapiens 23:59
The first hominids evolved and they became into Homo sapiens.