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4,600 million years ago, the atmosphere weak, only bacteria.
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542 million years ago, dramatic succession start Earth's evolutions
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488 million years ago, North tropics are completely wide of ocean.
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444 million years ago, mass ice formations contributing to rising sea levels.
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416 millions years ago, plants and animals form several plant species evolve
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359 million years ago, mass sediment deposition in mississippi
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318 million years ago, amphibians reach natural length, example: 7 meters
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299 million years ago, diversification spread of mammals, turtles, repidasauras, archosars.
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251 million years ago, flying vertebra, weak version.
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200 million year ago, pangea separation begins rapidly moving.
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146 million years ago, high sea levels create shallow inland seas.
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65.5 million years ago, extinction of non-avian dinosaurs and marine reptiles begin.
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55.8 million years ago, extremely weak most mass extinctions occur.
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33.9 million years ago, tropical ecosystems advance, grasslands advance.
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23 million years ago, warmer global climates miocene arise
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5.3 million years ago, continents move movements w/ changing temperatures
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1.8 million years ago, ice age ends more advanced humid societies form.
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0.0115 million years ago, warming age; 12,000 years old glaciers to glaciers from today melt.
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Current date, human activities have impact on Earth's geology and economy.
