88421 - Superb Pyritized 0.39'' Phylloceras Lower Cretaceous Ammonites Morocco David Unwin
Baker’s notes & crumb story
Description
David Unwin
Beautiful association of two Cretolamna teeth and one Stephanodus dentary
they were extracted from the same stratigraphic level
sedimentology
Steel 1970
88421 - Superb Pyritized 0.39'' Phylloceras Lower Cretaceous Ammonites Morocco David UnwinIt 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.