Superb Rare Fossil Ammonite - Fossil fragment - Douvilleiceras Mammillatum Ammonite with Pyrite – Madagascar - 230 mm - 190 mm





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Description from the seller
A magnificent ornamental fossil that combines the primordial power of time with the beauty of mineralogical transformation. This specimen belongs to the genus Douvilleiceras and displays all the distinctive traits of the species mammillatum: robust spiral nodules, prominent ribs, and a conical, flattened structure that clearly reveals the progressive growth of the shell.
Particularly fascinating is the presence of secondary mineralization of pyrite, which manifests in well-defined, shiny areas like metallic mirrors. These natural inclusions, appearing during the long fossilization process, give the ammonite a surprisingly sculptural quality, emphasizing the contrast between the smooth, reflective surface of the pyrite and the cream, ochre, and caramel-colored bands of the shell. The polished finish allows for appreciation of the complex ammonitic sutures and the internal structure visible through the transverse cut.
This ammonite comes from the layers of the Lower Cretaceous of Madagascar, a region rich in fossil fauna, where fossilization often produces specimens of great aesthetic value.
A perfect showpiece, a decorative object for studio display or museum collection, representing an authentic dialogue between science and art.
Species: Douvilleiceras Mammillatum
Epoch: Lower Cretaceous (about 110 million years ago)
Origin: Madagascar
Particularity: Presence of natural pyrite in relief.
Finishing: Glossed on both sides, with visible cut of the internal chamber.
Seller's Story
A magnificent ornamental fossil that combines the primordial power of time with the beauty of mineralogical transformation. This specimen belongs to the genus Douvilleiceras and displays all the distinctive traits of the species mammillatum: robust spiral nodules, prominent ribs, and a conical, flattened structure that clearly reveals the progressive growth of the shell.
Particularly fascinating is the presence of secondary mineralization of pyrite, which manifests in well-defined, shiny areas like metallic mirrors. These natural inclusions, appearing during the long fossilization process, give the ammonite a surprisingly sculptural quality, emphasizing the contrast between the smooth, reflective surface of the pyrite and the cream, ochre, and caramel-colored bands of the shell. The polished finish allows for appreciation of the complex ammonitic sutures and the internal structure visible through the transverse cut.
This ammonite comes from the layers of the Lower Cretaceous of Madagascar, a region rich in fossil fauna, where fossilization often produces specimens of great aesthetic value.
A perfect showpiece, a decorative object for studio display or museum collection, representing an authentic dialogue between science and art.
Species: Douvilleiceras Mammillatum
Epoch: Lower Cretaceous (about 110 million years ago)
Origin: Madagascar
Particularity: Presence of natural pyrite in relief.
Finishing: Glossed on both sides, with visible cut of the internal chamber.

