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22409 - Well Preserved Pyritized 0.87 Inch Unidentified Lower Cretaceous Ammonites Primitive tools 1344 g at MNHNP (two

SKU: 3461347366
4.8
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Description

1344 g at MNHNP (two stones of 694 and 650 g)

1 Classifier: L

0 mm for pyroxene

Subfamily: Mosasaurinae Williston

22409 - Well Preserved Pyritized 0.87 Inch Unidentified Lower Cretaceous Ammonites Primitive tools 1344 g at MNHNP (twoUnidentified 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.

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