Precambrian eon
volume
British pronunciation/pɹɪkˈambɹiən ˈiːɒn/
American pronunciation/pɹɪkˈæmbɹiən ˈiːɑːn/

"precambrian eon"の定義と意味

Precambrian eon
01

the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago

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