Ediacaran Definition
ēdē-äkə-rən
adjective
Of or relating to the final geologic period of the late Precambrian Era, lasting from 620 to 542 million years ago.
American Heritage
Of or relating to a group of fossilized soft-bodied marine organisms that are the earliest known remains of multicellular life and date from between 560 and 542 million years ago.
American Heritage
Origin of Ediacaran
After the Ediacaran Hills in southern Australia, where the first such fossils were found
From American Heritage Dictionary of the English Language, 5th Edition
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