Individual #Archean_era__Archean__Archeozoic__Archaeozoic__Archeozoic_era__Archaeozoic_era  the time prior to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
  part of:  Precambrian_period
  type:  geological_era__era  a major division of geological time; an era is usually divided into two or more periods

No statement uses or specializes Archean_era; click here to add one.


Another search (with same display options)?