03039 - Superb Pyritized 2.16'' Phylloceras Lower Cretaceous Ammonites Fish west of Hamada du Guir

west of Hamada du Guir

of which fossils have been found in the Kem Kem layers

The basin has a so great continuity in its stratigraphic record that both the Upper Cretaceous as well as the two first epochs of the Paleogene (Paleocene and Eocene) can be studied

It comes from the famous sites of the Hell Creek Formation in Montana (Maastrichtian stage

All the crocodylomorpha lived in this delta next to fish

03039 - Superb Pyritized 2.16'' Phylloceras Lower Cretaceous Ammonites Fish west of Hamada du GuirIt is naturally pyritized. It has undergone a taphonomic process of permineralization in Iron Sulfide (Pyrite). Permineralization is a process of fossilization in which mineral deposits form internal casts of organisms.