06112 - Beautiful Pyritized 0.90 Inch Phylloceras Lower Cretaceous Ammonites Concavotectum of which fossils have been

of which fossils have been found in the Kem Kem layers

It is conserved in its natural matrix

Some of them have glued and tiny filled fractures

Its serrations are very well defined

perfectly adapted to the marine ecosystems of the Cretaceous

06112 - Beautiful Pyritized 0.90 Inch Phylloceras Lower Cretaceous Ammonites Concavotectum of which fossils have beenSpecimen of extreme quality. His suture lines are wonderfully well detailed. It 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.