 precambrian_aeon |
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| 1. | [ noun ] (geology) the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago | |
| Synonyms: | Precambrian_period precambrian_eon Precambrian | |
| Related terms: | geological_time era eon Archeozoic archaeozoic Proterozoic | |
| Similar spelling: |
precambrian_eon Precambrian_period priscoan_aeon |
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