Etymology

Ediacaran

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Today it means: Of a geologic period within the Neoproterozoic era from about 620 to 542 million years ago. Full definition →

First used 20th c.
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The story

From Ediacara + -an. After the Ediacara Hills in South Australia; from an Australian Aboriginal term (details disputed). See Ediacara Hills on Wikipedia.Wikipedia

First known use, by meaning

  • from 20th c. Of a geologic period within the Neoproterozoic era from about 620 to 542 million years ago.
  • from 20th c. The Ediacaran period.
  • from 20th c. An organism that lived in the Ediacaran period.

Etymology from Wiktionary, CC BY-SA 4.0.