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Hadean | Archean | Proterozoic | Phanerozoic
English: The Archean (also spelled Archaean, formerly called the Archaeozoic, also spelled Archeozoic) is a geologic eon before the Proterozoic, ending 2500 Ma (million years ago).
日本語: 始生代

Subcategories

This category has the following 7 subcategories, out of 7 total.

A

E

M

P

S

T