THE HISTORY AND FUTURE OF REEFS
R
eefs have formed in the earth's seas for the past 550 million years. On these pages, we take a brief look at the geologic history of reefs and suggest what this history might tell us about the future of the reefs that exist today.
The geologic record of reefs on earth
The demise of Silurian reefs in the Great Lakes region
The future of modern reefs
© 1997,
Milwaukee Public Museum, Inc.