When scientists at a Maryland museum announced the discovery of the fossil of a whale skull on the banks of the Potomac River in Virginia, they calculated the age to be approximately 15 million years old.
The age, according to a Washington Post report Monday, was determined by the geologic formation in which it was found, the Calvert Formation.
Scientists call this the relative method of dating, which assumes the fossils in a particular sedimentary layer are within the same geological epoch....
Dr. Terry Mortenson | 1/16/2009
