Wolfram|Alpha

Computing...

Input interpretation:

20 million years ago


Unit conversion:

6.307×10^14 seconds


Geological time in the past:

eon | era | period | epoch\nPhanerozoic | Cenozoic | Neogene | Miocene


Earth properties 20 million years ago:

sea level | 99.7 m above now\nbiological genera | 4700  (89.6% of now)\natmospheric oxygen | 20.5 vol%  (96.2% of now)\natmospheric CO_2 | (267 to 469) ppmv  (79.7 to 140% of now)\n(interpolated results)

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