Quantum redactiones paginae "Archaicum" differant

'''Archaicum'''<ref>Christof Kuhn, "[http://www.geol-info.at/etyploc.htm Etymology of Geological Time Units]"</ref><ref>"[[Hadaicum]], Archaicum": vide [http://lrg.elte.hu/oktatas/Geokemiai%20Ciklusok%20BSc-MSc/III%20Naprendszer%20es%20Fold%20kemiai%20osszetetele%20%5BCompatibility%20Mode%5D.pdf p. 46]</ref> vel '''Archaeozoicum'''{{FD ref}} est [[aeon]] qui abhinc annorum circiter 3 800 miliones coepit et finem abhinc annorum circa 2 500 miliones habuit, cum aeon [[proterozoicum|Proterozoicus]] coepit.