 proterozoic |
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| 1. | [ adjective ] (geology) formed in the later of two divisions of the Precambrian era | |
| Examples: | "proterozoic life forms" |
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| Related terms: | geology early | |
| 2. | [ noun ] (geology) from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms | |
| Synonyms: | proterozoic_aeon proterozoic_eon Preoterozoic_era | |
| Related terms: | eon era Precambrian | |
| Similar spelling: |
Proterochampsa |
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