88412 - Superb Pyritized 1.28 Inch Goniatites Devonian Cephalopod Other_Reptiles This last feature easily differentiates

This last feature easily differentiates them from the teeth of the Dromaeosauridae family

Without a doubt

Precious tooth of Cretolamna maroccana (Mackerel Shark) from the phosphate deposits of the Ouled Abdoun Basin (Morocco)

On the other hand

Sometimes large concentrations of iron oxide are present

88412 - Superb Pyritized 1.28 Inch Goniatites Devonian Cephalopod Other_Reptiles This last feature easily differentiatesImpressive example of this Devonian cephalopod. 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. The characteristic lines of suture of this cephalopod of the Paleozoic can be perfectly observed. Nice specimen.