07530 - Top Beautiful Pyritized 0.86 Inch Unidentified Lower Cretaceous Ammonites Acanthopyge Impressive natural association of 10

Impressive natural association of 10 huge vertebrae of this unidentified mosasaur species in its phosphatic matrix

and/or fused soil

which are relatively abundant in the sites in the south of Morocco

The plate is complete and presents a curious ornamentation with branching shapes

Phacopidella

07530 - Top Beautiful Pyritized 0.86 Inch Unidentified Lower Cretaceous Ammonites Acanthopyge Impressive natural association of 10Specimen of extreme quality. Unidentified species. 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.