显生宙
Phanerozoic, geological eon lasting since the Cambrian 寒武紀|寒武纪[Han2 wu3 ji4], c. 540m year ago
Traditional: 顯生宙
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📖 Additional Information
English Phonetic:
,fænәrә'zәuik
Detailed Definition:
n the period from about 5,400 million years ago until the present