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07524 - Nicely Preserved Pyritized 1.01 Inch Unidentified Lower Cretaceous Ammonites Urchins Müller and Henle 1838 (nurse

SKU: 84808957854
4.5
USD46.50 USD71.50 Bay rate

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Description

Müller and Henle 1838 (nurse shark)

It is displayed as it was discovered

Some authors have proposed this species as the predecessor of the current white shark (Great White-Carcharodon carcharias) and the great Carcharodon megalodon

Rooted teeth

They are found fossilized in silica (silicified)

07524 - Nicely Preserved Pyritized 1.01 Inch Unidentified Lower Cretaceous Ammonites Urchins Müller and Henle 1838 (nurseSpecimen of extreme quality. Unidentified 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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