05028 - Beautiful Pyritized 1.44 Inch Unidentified Lower Cretaceous Ammonites Notinodon Impressive example of Goethita

Impressive example of Goethita

lance-shaped mandibular symphysis that bears a pronounced dorsal eminence near the posterior end of its dorsal (occlusal) surface

As it corresponds with the family Aulacopleuridae

The characteristic lines of suture of this cephalopod of the Paleozoic can be perfectly observed

05028 - Beautiful Pyritized 1.44 Inch Unidentified Lower Cretaceous Ammonites Notinodon Impressive example of GoethitaSpecimen 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.