07513 - Top Beautiful Pyritized 1.31 Inch Phylloceras Lower Cretaceous Ammonites Acanthopyge It is a quite rare
Yard notes & kiln story
Description
It is a quite rare taxon
Cuny and S
Pretty phalanx well preserved
Family MOSASAURIDAE Gervais
and are closely related to the family Calymenidae
07513 - Top Beautiful Pyritized 1.31 Inch Phylloceras Lower Cretaceous Ammonites Acanthopyge It is a quite rareSpecimen of extreme quality. 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.