06105 - Well Preserved Pyritized 1.31 Inch Unidentified Lower Cretaceous Ammonites Cretolamna in matrix As it corresponds with the

As it corresponds with the family Aulacopleuridae

This restoration method used by local miners consists in the colmatage of the fractures with a mix of glued sand of the same stratigraphic level where the fossil has been excavated

1080/02724634

Arcticeraurinella

Rouault 1847 (trilobite)

06105 - Well Preserved Pyritized 1.31 Inch Unidentified Lower Cretaceous Ammonites Cretolamna in matrix As it corresponds with theSpecimen 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.