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Barrande 1868 (trilobite)
They preserve the structures with amazing detail
Chacomurus
Permineralization is a process of fossilization in which mineral deposits form internal casts of organisms
it has a series of very important paleontological sites in which amazing assemblages from big and small marine vertebrates are present
07582 - Great 8.78 Inch Hybodus Shark Dorsal Spine Cretaceous KemKem Beds Acanthopyge Barrande 1868 (trilobite)Hybodus sp, Agassiz 1837 (elasmobranch) Chondrichthyes Hybodontiformes Hybodontidae Beautiful spine corresponding to the dorsal fin of this incredible shark that reigned the seas and the fluvial systems next to the coast during all the Mesozoic Era. It is a species of shark that presented particular features, such as this sharp spine in its flipper. The preservation of this piece is very good, and the strong and well defined longitudinal stretch marks
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