archeozoic








[ad_1] adjective
  1. noting or pertaining to the earlier half of the Precambrian Era, from about 5 billion to 2.5 billion years ago, during which the earliest datable rocks were formed and from which the oldest known fossil forms, blue-green algae and bacteria, have been recovered.

noun

  1. the Archeozoic division of geologic time or the rock systems formed then.

adjective

  1. a variant spelling (esp US) of Archaeozoic

  1. See Archean.
[ad_2]
54 queries 0.571