The fossilised shell of a Nautilus, common in the worlds oceans during the Cretaceous and preceding periods. This polished specimen from Madagascar

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The fossilised shell of a Nautilus, common in the worlds oceans during the Cretaceous and preceding periods. This polished specimen from Madagascar has had calcite crystals replace the internal structure

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Size: 5800px × 3918px
Location: Madagascar
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

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