Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 24 - Self-Quiz - Page 413: 9

Answer

Ediacarans evolved before the Cambrian.

Work Step by Step

The Cambrian occurred between 542 and 488 million years ago. Scientists had discovered 570-million-year-old fossils of the Ediacarans in Australia, which placed these fossils before the Cambrian period.
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