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The process that created the septaria that characterize septarian concretions remains unclear
The age of these correspond to the Maastrichtian stage
in contrast to regularly coiled ammonites
• Miocene of Switzerland (1 collection)
Eldredgeops
07796 - Top Quality Halisaurus arambourgi (Mosasaur) Premaxillary Nose Bone With Tooth Bismuth The process that created theBeautiful specimen with one tooth. This specimen has been stabilized on its surface by Paraloid B 72 to ensure its stability and consistency. This process does not affect neither the color nor any of the characteristics. It simply makes the specimen better preserved in the long term. In the international market is very common to find Mosasaurus rests coming from the phosphate quarries of the Upper Cretaceous of the Ouled Abdoun Basin (Morocco). This