05227 - Beautiful Pyritized 0.86 Inch Phylloceras Lower Cretaceous Ammonites Neltneria See also Kumar and Loyal
Yard notes & kiln story
Description
See also Kumar and Loyal 1987
Agassiz 1843 (ray-finned fish)
with orange tones
Gürich 1901 (trilobite)
Nice and big specimen
05227 - Beautiful Pyritized 0.86 Inch Phylloceras Lower Cretaceous Ammonites Neltneria See also Kumar and LoyalSpecimen 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.