WordNet: Archaeozoic, Archaeozoic aeon, Archean, Archean aeon, Archean eon, Archeozoic, Archeozoic eon

Sanatista
the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life



Archaeozoic


Archaeozoic aeon


Archean


Archean aeon


Archean eon


Archeozoic


Archeozoic eon