What is Neoarchaean?
The '''Neoarchaean''' ('''Neoarchean''') is the last [[geology|geological]] [[era]] in the [[Archaean]] eon. It began 2.8 [[billion]] years ago and ended 2.5 billion years ago.<ref name=chart/> Before the Neoarchaean era was the [[Mesoarchaean]] era and before the [[Palaeoproterozoic]]. [[Oxygen]]ic [[photosynthesis]] first [[evolution|evolved]] in this era. This led to an [[oxygen catastrophe]] in the [[Palaeoproterozoic]] era. It was caused by a [[poison]]ous buildup of oxygen in the [[atmosphere]]. This was created by oxygen-producing [[photoautotroph]]s that evolved in the Neoarchaean. The [[supercontinent]] [[Kenorland]] formed during this period, about 2.7 billion years ago. ==References== {{reflist|refs= <ref name=chart>{{cite web|title=International Chronostratigraphic Chart|url=http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf|publisher=International Commission on Stratigraphy|accessdate=6 July 2013}}</ref> }} {{Geologic history}} {{science-stub}} [[Category:Eras]] [[Category:Archaean]]