ediacaran period

Main Entry:  Ediacaran period
Part of Speech:  n
Definition:  a late Precambrian period of geological time, before the Cambrian Period to 635 million years ago; also, the last faunal stage of the Precambrian or Proterozoic
Example:  The Ediacaran period ranges from 620 to 542 million years before the present.
Etymology:  1961; name for site in Ediacara Hills, South Australia
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