The Cambrian is a geologic period of the Paleozoic Era, spanning approximately 539–485 million years ago, characterized by a major diversification of multicellular life known as the Cambrian explosion ...
How Did These Strange, Ancient Organisms Turn into Such Remarkable Fossils? New Research in Geology reveals why the 570-million-year-old Ediacaran Biota were so exceptionally preserved. Boulder, Colo.
The Ediacaran is the terminal period of the Neoproterozoic Era, spanning approximately 635 to 541 million years ago, immediately preceding the Cambrian Period. It is defined stratigraphically by the ...
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