Natural History Museum%2c London1y
The Cretaceous Period: What was Earth like before dinosaurs went extinct?
But what was the world like in the millions of years ... It lasted a long time, nearly 80 million years, making it the longest geological period of the Phanerozoic Eon, which began some 539 million ...
Nature3y
Major events in the evolution of amino acid synthesis
The Hadean eon represents the time from which Earth first formed ... the gathering up of oxygen in Earth's atmosphere, and the Phanerozoic eon coincides with the major diversification of animals ...
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Study charts how Earth's global temperature has drastically changed over the past 485 million years, driven by COâ‚‚
The new curve reveals that Earth's temperature has varied more than previously thought over much of the Phanerozoic Eon, the past 540 million years of geologic time ... around the world at risk ...
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Historic study extends chart of life by nearly 1.5 billion years
T he Proterozoic Eon, spanning from 2,500 million to 539 million years ago, marked a transformative chapter in Earth's history.Often overshadowed by the more data-rich Phanerozoic Eon, this period ...