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Prokaryotic and unicellular organism -
Guide fossil: Stromatolites Geological event: There was a big meteoric bombardement. The earth,the moon and the lithosphere was formed. Climate event: The salt level of the seas increased.First Ice Age. Oxygen was lacking.
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Eukaryotic and pluricellular organism -
The first explosion of life occurs where new species of living beings appear -
Guide fossil: Trilobites Geological event: Pangea formation.Intense volcanism and orogenies Climate event: Glaciations and global warming
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The first plants appear without terrestrial flowers (ferns) -
Appear those many species of fishes with jaw or jawless -
They evolve amphibians from freshwater fish to "fish" with fleshy, lobed fins similar to legs -
The first reptile was the Hylonomus, reptiles emerged from amphibians such as the batrazium -
Guide fossil: Ammonites,Belemnites and Quercus Geological event: At the beginning of the Triassic, Pangaea begins to separate and the continents were formed Climate event: Extreme aridity especially in the interior of Pangaea although over the course of the era it evolves into a humid tropical climate.
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The first flowering plants appear and the first record of the flowering plant is Montsechia vidallii -
Birds appear from the evolution of a dinosaur exactly from the Deinonychus. -
Guide fossil: Nummulites Geological event: Continental drift ends (the formation of the continents) Climate event: Ice age
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oldest fossil of homo sapiens dates back 200,000 years,also this species belongs to the family of hominids -
the first hominids spread across Africa, Europe and Asia.