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Ediacaran

adjective
  1. of, denoting, or formed in the last 50 million years of the Neoproterozoic era, during which a new texturally and chemically distinctive carbonate layer appeared, indicating climatic change
noun
  1. the Ediacaran the Ediacaran period or rock system

Word Origin for Ediacaran

C20: named after the Ediacara Hills in the Flinders mountain range in South Australia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
ediacaran in Science

Ediacaran

[ē′dē-ä′kə-rən]
  1. Relating to a group of fossilized organisms that are the earliest known remains of multicellular life. They are soft-bodied marine life forms that date from between 560 and 545 million years ago, during the late Precambrian Eon.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.