This picture is of the  Petalobrissus rawdahensis  (Smith, 1995) sea urchin fossil. It existed in the Upper Cretaceous Period (Maastricht...

This picture is of several  Decameros sp.  (Comatulidae) crinoid calyx fossils. They existed in the Cretaceous Period and was found in Sp...

This picture is of the  Faujasia eccentripora  (Lees, 1928) sea urchin fossil. It existed in the Upper Cretaceous Period (Maastrichtian) ...