06104 - Top Quality Pyritized 1.39 Inch Unidentified Lower Cretaceous Ammonites Mammites nodosoides Protoginglymostoma
Yard notes & kiln story
Description
Protoginglymostoma
Magnificent specimen with detailed preservation
66 million years ago
The bones have some fractures that have been glued and restored by the filling method
Altaesajania
06104 - Top Quality Pyritized 1.39 Inch Unidentified Lower Cretaceous Ammonites Mammites nodosoides ProtoginglymostomaSpecimen 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.