05031 - Beautiful Pyritized 1.54 Inch Unidentified Lower Cretaceous Ammonites Coelacanth It is a magnificent acquisition

It is a magnificent acquisition for any collection

Mader and A

and especially the rounded bullet-shaped stones

there is still a lot to be discovered about this ground dwelling herbivore

Parent taxon: Trochurinae according to J

05031 - Beautiful Pyritized 1.54 Inch Unidentified Lower Cretaceous Ammonites Coelacanth It is a magnificent acquisitionSpecimen 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.