 archeozoic_eon |
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| 1. | [ noun ] (geology) the time from 1.5 billion to 5 billion years ago; earth's crust formed; unicellular organisms are earliest forms of life | |
| Synonyms: | Archaeozoic Archeozoic_era Archaeozoic_era archaeozoic_aeon archean archean_aeon archean_eon Archeozoic | |
| Related terms: | eon era Precambrian | |
| Similar spelling: |
archaeozoic_aeon Archeozoic_era Archaeozoic Archaeozoic_era archegoniate |
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