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05223 - Beautiful Pyritized 0.73 Inch Phylloceras Lower Cretaceous Ammonites Eodiaphyodus inside his own matrix

SKU: 5164332757
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Description

inside his own matrix

Septarian concretions or septarian nodules

CaCO3 (the other forms being the minerals calcite and vaterite)

and introducing the insects inside

however only a few claws

05223 - Beautiful Pyritized 0.73 Inch Phylloceras Lower Cretaceous Ammonites Eodiaphyodus inside his own matrixSpecimen 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.

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