07534 - Beautiful Pyritized 0.49 Inch Olcostephanus sp Lower Cretaceous Ammonites KemKem_Beds_Fish_Assemblage It has some tiny glued

It has some tiny glued fractures

Trimerocephalus

Peabody Museum of Natural History

a few miles south-east of Ouzina

It is one of the main industrial ores of the metal vanadium and a minor source of lead

07534 - Beautiful Pyritized 0.49 Inch Olcostephanus sp Lower Cretaceous Ammonites KemKem_Beds_Fish_Assemblage It has some tiny gluedOlcostephanus sp, Neumayr (1875) Ammonite Cephalopoda Ammonoidea Olcostephanidae 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.