07535 - Astonishing Pyritized 0.63 Inch Olcostephanus sp Lower Cretaceous Ammonites
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07535 - Astonishing Pyritized 0.63 Inch Olcostephanus sp Lower Cretaceous Ammonites
$21.38
Sale price
$21.38
Regular price
$28.50
† Olcostephanus 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.