05513 - Well Preserved Pyritized 1.34 Inch Goniatite Devonian Cephalopod Miscellaneous echinoderms This type of preservation only
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Description
This type of preservation only occurs under certain very special circumstances
Precious collection of 10 Black Squalicorax pristodontus (Crow Shark) from a new phosphate location in the Atlas mountains (Morocco)
Its specific assignation to the family Pristidae
Ragaini 1994 and Sepkoski 2002
Comments: Plessitic octahedrite
05513 - Well Preserved Pyritized 1.34 Inch Goniatite Devonian Cephalopod Miscellaneous echinoderms This type of preservation onlyUnidentified 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.
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