05217 - Beautiful Pyritized 0.63 Inch Phylloceras Lower Cretaceous Ammonites Pterosaur Bones Any paleontologist has stated formally

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

16 Inch = 4

with an inflated posterior surface

it has some glued fractures

many of the spines during the preparation process have been fractured and glued again

05217 - Beautiful Pyritized 0.63 Inch Phylloceras Lower Cretaceous Ammonites Pterosaur Bones Any paleontologist has stated formallySpecimen 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.