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stromatolitic
Variant of stromatolite
noun
a laminated, sedimentary rock structure formed primarily in Precambrian shallow pools by mats of sticky, blue-green algae, which trapped layers of silt, esp. of calcium carbonate: these wavy or round formations serve as evidence for dating the first life forms on earth and are still being produced today
Related Forms:
- stromatolitic adjective
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.