Cryptozoic; geological eon before the appearance of abundant fossils; hidden life, as opposed to Phanerozoic
trad. 隱生宙
Also written 隱生宙【yǐn shēng zhòu】
Cryptozoic; geological eon before the appearance of abundant fossils; hidden life, as opposed to Phanerozoic
trad. 隱生宙
Also written 隱生宙【yǐn shēng zhòu】