05217 - Beautiful Pyritized 0.63 Inch Phylloceras Lower Cretaceous Ammonites Pterosaur Bones 1 huge phalanx and 1

1 huge phalanx and 1 metacarpal are visible

This is a piece worth of advanced collectors

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

it has some glued fractures

where the transportation energy was relatively high

05217 - Beautiful Pyritized 0.63 Inch Phylloceras Lower Cretaceous Ammonites Pterosaur Bones 1 huge phalanx and 1Specimen 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.