HERE IS A REAL CLAM SHELL FOSSIL THAT IS MILLIONS OF YEARS OLD FROM THE BADLANDS OF SOUTH DAKOTA AREA THAT CAME OUT OF THE PETRIFIED GARDENS MUSEUM IN KADOKA,SD THAT CLOSED ITS DOORS A FEW YEARS AGO.. THIS FOSSIL WAS COLLECTED BY THEM 50+ YEARS AGO. ALL OF OUR ITEMS ARE OLD USED OR VINTAGE AND MAY HAVE WEAR , AGING , AND DENTING SO PLEASE LOOK THE PICS OVER WELL AS THE PICS ARE A MAJOR PART OF THE DESCRIPTION..