07511 - Beautiful Pyritized 1.66 Inch Phylloceras Lower Cretaceous Ammonites scales Great collection of 4 specimens
Yard notes & kiln story
Description
Great collection of 4 specimens
Burmeister 1843 (trilobite)
It was initially assigned to the family Trematochampsidae
Pricyclopyginae
Lapparent 1957
07511 - Beautiful Pyritized 1.66 Inch Phylloceras Lower Cretaceous Ammonites scales Great collection of 4 specimensSpecimen 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.