05026 - Beautiful Pyritized 1.79 Inch Phylloceras Lower Cretaceous Ammonites Hexanchus The complicated sedimentarian architecture of

The complicated sedimentarian architecture of the layers where most large vertebrates are found makes the excavation methodology a real challenge

Subfamily: Mosasaurinae Williston

It is a magnificent example of the Moroccan Cyphaspis

and future discoveries will continue to enrich our view of the dynamics of the early Phanerozoic radiation and of the nature of the fossil record

This insect has not yet been identified by our experts

05026 - Beautiful Pyritized 1.79 Inch Phylloceras Lower Cretaceous Ammonites Hexanchus The complicated sedimentarian architecture ofSpecimen 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.