Learn how fossils form through sedimentation and mineralization. Discover types like moulds, casts, and trace fossils in our ...
Donald G. MacVicar Jr., 21-year-old Amherst senior and chemistry major, got the idea in a college bull session. After he tested it in the laboratory, MacVicar decided he had the answer to a problem ...
Displayed in the National Museum of Natural History’s Deep Time Fossil Hall, the Allosaurus Fossil Is Now the Name-Bearing Specimen for the Entire Species Note to editors: Photos of the type specimen ...