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nounthe period from about 540 million years ago until the present, a period when abundant life existed
Similar:
Definition that contains phanerozoic
- precambrian aeon the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
- precambrian eon the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
- precambrian period the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
- precambrian the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago