88424 - Superb Pyritized 0.41 Inch Phylloceras Lower Cretaceous Ammonites Vanadinite Calvo and Salgado 1995
Yard notes & kiln story
Description
Calvo and Salgado 1995
Extremely rare piece corresponding to a complete and perfect claw
Spectacular raptor tooth of supreme quality
Upchurch et al
93 Inch = 23
88424 - Superb Pyritized 0.41 Inch Phylloceras Lower Cretaceous Ammonites Vanadinite Calvo and Salgado 1995It 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.