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Period: 4600 BCE to 541 BCE
Precambrian
Guide Fossil: Estromatolitos
Geological Event: Early evolution of the Earth
Climate Event : It passes from a reducing atmosphere to an oxidizing atmosphere. -
3800 BCE
1st Life Forms - 4:10h
Unicellular and prokaryotes life forms in the marine environment. -
1500 BCE
1st most complex life forms - 9:07h
The first eukaryotic cells and the first multicellular organisms appeared. -
Period: 541 BCE to 252 BCE
Paleozoic
Guide Fossil: Tribolites Trilobites
Geological Event: Rodinia fragmented and formed the supercontinent Pangea
Climate Event: The cold climate alternated with warmer periods -
520 BCE
Great explosion of life - 21:10h
Various forms of life and the first vertebrate organisms appeared. -
500 BCE
Age of the fish - 21:37h
Fish appeared, which were the first vertebrates that populated those primitive seas. -
485 BCE
First terrestrial plants (gymnosperms) - 21:48h
The first plants without flowers colonize the terrestrial environment. -
395 BCE
Amphibian age - 22:13h
The first vertebrates to conquer the terrestrial environment. -
320 BCE
Age of the reptiles - 22:43h
They emerge from one of the evolutionary lines of amphibians. The first ones were small. -
Period: 252 BCE to 66 BCE
Mesozoic
Guide Fossil: Ammonites
Geological Event: Fragmentation of Pangea
Climate Event: Warm climate, no glaciations in this Age. -
145 BCE
1st angiosperms - 23:22h
First flowering plants appear -
140 BCE
Age of the birds - 23:39h
Great variety of birds appear -
Period: 66 BCE to
Cenozoic
Guide Fossil: Nummulites
Geological Event: Formation of the polar caps
Climate Event: There were 4 glaciations -
2 BCE
1st hominids - 23:53h
The first human ancestors appear -
1 BCE
1st Homo sapiens - 23:59h
Oldest remains of homosapien
