07531 - Top Quality Pyritized 0.98 Inch Unidentified Lower Cretaceous Ammonites Dinosaur Age Mammals Applied Petrology Laboratory (APPLIED PETROLOGY

Applied Petrology Laboratory (APPLIED PETROLOGY LABORATORY

Onchopristis is a genus of extinct giant sawfish that lived in the Lower Cretaceous to Upper Cretaceous in North Africa and New Zealand

It is a piece with a size that exceeds that of the average for its species

Anetoceras elegantulum

In the international market is very common to find Mosasaurus rests coming from the phosphate quarries of the Upper Cretaceous of the Ouled Abdoun Basin (Morocco)

07531 - Top Quality Pyritized 0.98 Inch Unidentified Lower Cretaceous Ammonites Dinosaur Age Mammals Applied Petrology Laboratory (APPLIED PETROLOGYSpecimen 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.