The fossil may have lost water, or color ... darken with heat but the mineral of the teeth - apatite - remains unchanged Compare the very young limpet and abalone shell with the Pleistocene clam ...

Limpet Mines Likely Caused Blasts on Two Tankers in Mediterranean Sea, Sources Say By Renee Maltezou, Yannis Souliotis and Jonathan Saul ATHENS (Reuters) - Mines attached to the hulls of ships and ...