Ocean dwellers of Avalon. (Samplings).

Publication: Natural History

Publication Date: 01-JUL-03

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COPYRIGHT 2003 Natural History Magazine, Inc.

Paleontologists once thought the shells and bones left by the organisms that emerged from the Cambrian explosion, some 545 million years ago, were remnants of Earth's earliest complex life-forms. But then fossils of earlier, soft-bodied creatures, now called Ediacarans, began to come to light. Recently the oldest such fossils...

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