Spinosaurus may be the larges Theropod to ever stalk the Prehistoric Americas and believed to be even larger than T-Rex. Recently (late it was determined to be the first and only known aquatic dinosaur.
Amazing History Channel "Know Where You Stand" campaign by Seth Taras - Hindenburg at Lakehurst, New Jersey 1937 / D-Day at Normandy Beach 1944 / Berlin Wall at the Brandenburg Gate 1989 / Hitler at the Eiffel Tower, Paris 1940 / 2004
Rock Layers: Timeline of Life on EarthEvolution is a complicated subject. While everybody understands that black bears are related to grizzly bears and we can even figure they are related to extinct bears, lots of people wonder how scientists can be so su