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1. A sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
   "The little animals fossilized and are now embedded in the limestone"

Derived forms: limestones

Type of: rock, sedimentary rock, stone

Encyclopedia: Limestone, Maine Limestone, MI Limestone, NY Limestone, Michigan Limestone, ME Limestone, IL Limestone Limestone, Kentucky Limestone, Illinois Limestone, Victoria Limestone, Tennessee Limestone, West Virginia Limestone, WV Limestone, TN Limestone, New York Limestone, New Brunswick Limestone, Oklahoma Limestone, OK