Fossil Gastropod, Clam & Ammonite Association - SD

This is an association of three different types of fossils from the Fox Hills Formation of South Dakota. There is a beautifully preserved, 1.7" Semitriton gastropod next to a Crassatella fossil clam, along with several partial ammonites. The piece has been nicely prepared from the hard limestone concretion and displays nicely on a flat surface.