The Smithsonian Museum of Natural History has a number of Cretaceous Period shell fossils on display from Alabama.  This first picture i...

My knowledge of shark teeth fossils is very limited so finding this Internet site in Japan is a real treasure: J-elasmo  by  Dr. Fumio Na...

Picture of an extremely old fossil of red alga.  This fossil is on display at the Smithsonian Museum of Natural History and is called Gryp...