The Sphenodiscus lenticularis ammonite found in the Fox Hills Formation of South Dakota, U.S.A. Originally named by Owen in 1852 the gen...

This remarkable find of a Paleozoic shark tooth in central Kentucky is a Saivodus striatus .  This type of fossil was originally describe...

These plant fossils are very interesting showing conifer cones of the Pararaucaria patagonica .  These plants existed in the Middle Juras...