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Ice Age ended; current ecosystems developed and stabilized
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Modern humans appear
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(ancestors of modern humans)
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K-T mass extinction, 75% species died off including dinosaurs, beginning of the Cenozoic Era
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First flowering plants appear
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First birds evolve from dinosaurs
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Pangea breaks up
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Small mammals evolve
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Dinosaurs appear
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“The Great Dying” largest mass extinction in Earth’s history, 96% of species lost
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Carboniferous period. Land plants dominated by fern-like gymnosperms, insects abundant and large
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Plants and animals colonize the land
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First fish evolve
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the enormous expansion in life diversity in oceans
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Ozone layer forms protecting land animals from UV radiation
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First multicellular life arises
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Eukaryotic cells appear. Probably develop when Prokaryotic cells engulf another and form a symbiosis which eventually becomes organelles
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Great Oxygenation Event, mass extinction of anaerobic bacteria, beginning of Proterozoic Epoch
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Photosynthesizing cyanobacteria evolve beginning oxygenation of the atmosphere
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Bacteria split from Archaea, the first organisms that produce ATP, earliest fossils
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First life appears on Earth
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The oldest preserved rocks are found during this time period
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Earth is constantly bombarded by meteorites, beginning of Archaean Epoch
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The first oceans form
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The moon is formed when a small planet-sized body collides with the Earth
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Earth forms from an accretion of stellar nebula disk, beginning of the Hadean Epoch.