This picture is of a Productus wortheni (Hall, 1858) brachiopod fossil. It existed in the Mississippian Period. The fossil was found in C...

  This picture is of a set of crinoid pentagon shaped fossils that once made up a column. They existed in the Mississippian Period. The foss...

  This picture is of a  Pentacrinites briareus  (Ameghino, 1907) ground sloth fossil. It was found in Argentina. The fossil dates to the Pli...