Sectioned Cleoniceras Ammonite Pair with Polished...

Fascinating Fossilized Ammonite on Base — This exceptional lot features a pair of ammonites of the genus Cleoniceras, sectioned and polished to reveal their complex internal anatomy. Originating from the rich fossil-bearing deposits of Madagascar, these specimens date back to the Cretaceous, about 110 million years ago. The two halves, obtained from a single fossil, are mounted on an elegant wooden base, creating a symmetric display that serves as a prestigious or large-valued paperweight or a natural history sculpture. The cutting and polishing intervention is not a simple finish, but an act that reveals a hidden world, transforming a paleontological specimen into a geologic artwork. Careful observation of the glossy surfaces allows one to appreciate the perfection of the logarithmic spiral, one of nature's most iconic forms. The inner chambers, once used by the cephalopod to regulate buoyancy, were filled over millions of years with mineral deposits. Warm, vibrant tones can be admired: the amber, orange, and cream of calcite and aragonite contrast magnificently with the darker, earthier hues of the surrounding rock matrix. The thin sutural lines, drawing fern-like patterns, testify to the biological complexity of these extinct creatures and separate the various chambers, many of which show evocative drusy crystallizations that glitter in the light. The fossilization process of these ammonites is a testament to Earth's dynamics. After death, the shells settled on the seabed and were rapidly buried by clayey sediments, which protected them from decomposition. Through geological eras, mineral-rich water filtered through the sediments, dissolving the original aragonite shell and replacing it, molecule by molecule, with more stable minerals such as calcite. The hollow chambers became small geodes, cavities in which crystals had time and space to grow undisturbed, creating the mineral mosaics we can admire today. This specimen is therefore a time capsule, preserving the anatomy of a living creature and the chronicle of the geological processes that transformed it. As a collectible object and a piece of décor, this pair of ammonites has a multifaceted appeal. For the natural history enthusiast, it represents a high-quality paleontological find, a tangible fragment of the Age of Dinosaurs. For the interior designer and design lover, it is a sculptural element of rare elegance, able to enrich a bookshelf, a study, or a console with a touch of intellectual refinement. Its symmetry and warm colors make it a focal point in any environment, evoking the charm of ancient Wunderkammern, or cabinets of curiosities, where science and wonder merged. Its dual function as a paperweight combines aesthetics with practicality, making it as beautiful as it is useful.

Estimate:£439.73

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