05217 - Beautiful Pyritized 0.63 Inch Phylloceras Lower Cretaceous Ammonites Pterosaur Bones 16 Inch = 4

16 Inch = 4

The base of this specimen has been cast in a process of "mummification" similar to that carried out in paleontological excavations to recover large specimens on matrix with the least possible damage

Class: Iron

Any paleontologist has stated formally that the teeth said informally to belong to pterosaurs do belong to pterosaurs

Reptilia - Testudines - Pancheloniida

05217 - Beautiful Pyritized 0.63 Inch Phylloceras Lower Cretaceous Ammonites Pterosaur Bones 16 Inch = 4Specimen of extreme quality. 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.