Fossil Nautilo - Cymatoceras Sp. - Opalization on Shell - Fossil fragment - Perfect State of Preservation - 165 mm - 120 mm





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Description from the seller
Fossil nautilus - Cymatoceras species
"Cymatoceras" is a genus of extinct cephalopods, described by Hyatt in 1884. They are known for their coiled shells and are part of the family Cymatoceratidae. These extinct marine organisms lived from the late Jurassic to the late Oligocene and represent an interesting subject of study for paleontologists to understand the evolutionary history of cephalopods and the marine environment in the past.
Nautilus fossils are known for their rich caramel and brown colors displayed in intricate striped patterns. These fascinating colors are the result of an intriguing process that occurred during fossilization.
The original organic material present in the living Nautilus has been gradually replaced by colorful calcite minerals over millions of years. This process, known as permineralization, involves the slow infiltration of minerals into the microscopic pores and cavities within the fossilized shell. As the minerals replace the organic material, they can impart a wide range of colors and patterns to the fossilized shell, resulting in the beautiful shades of caramel and brown with intricate streaks that are often observed in Nautilus fossils.
Seller's Story
Fossil nautilus - Cymatoceras species
"Cymatoceras" is a genus of extinct cephalopods, described by Hyatt in 1884. They are known for their coiled shells and are part of the family Cymatoceratidae. These extinct marine organisms lived from the late Jurassic to the late Oligocene and represent an interesting subject of study for paleontologists to understand the evolutionary history of cephalopods and the marine environment in the past.
Nautilus fossils are known for their rich caramel and brown colors displayed in intricate striped patterns. These fascinating colors are the result of an intriguing process that occurred during fossilization.
The original organic material present in the living Nautilus has been gradually replaced by colorful calcite minerals over millions of years. This process, known as permineralization, involves the slow infiltration of minerals into the microscopic pores and cavities within the fossilized shell. As the minerals replace the organic material, they can impart a wide range of colors and patterns to the fossilized shell, resulting in the beautiful shades of caramel and brown with intricate streaks that are often observed in Nautilus fossils.

