Definition that contains phanerozoic eon
- 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
- 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