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orange and black come from small paleochannels composed by thin layers
The Ouled Abdoun Basin (or Khouribga Basin)
There is yet a lot to be known about these fascinating theropods
Fantastic and very rare tooth of this North African sauropod species
This is a very didactic specimen and recommended for expert and advanced collectors
05027 - Beautiful Pyritized 1.20 Inch Unidentified Lower Cretaceous Ammonites Mosasaurus hoffmanni orange and black come fromSpecimen 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.