22407 - Beautiful Pyritized 1.14 Inch Goniatite Devonian Cephalopod Reedops there are no fractures or

there are no fractures or imperfections

usually destroy many interesting bone rests

where the appendages are incredibly preserved

Halisaurus (Squamata: Mosasauridae) from the Maastrichtian of Angola

Impressive specimen of the genus Nankinolithus

22407 - Beautiful Pyritized 1.14 Inch Goniatite Devonian Cephalopod Reedops there are no fractures orUnidentified 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.