Fossilized Cleoniceras Ammonite with exceptional...

A highly conserved specimen of Cleoniceras with extraordinary patterns of mineralized sutures — This specimen of Cleoniceras ammonite, originating from the geological formations of Madagascar, represents a fossil of notable paleontological and collecting interest. The species Cleoniceras, typical of the Early Cretaceous (Aptian), is distinguished by its involute shell and the complex designs of ammonitic sutures, here magnificently preserved and made visible by mineral replacement. The shell exhibits exceptional secondary mineralization, with a predominance of aragonite that gives warm hues ranging from intense orange to reddish-brown, interrupted by portions of white calcite. The suture patterns, intricate and fern-like, emerge with sharp definition against the dark gray-brown background, creating an appealing visual contrast. The external surface has been professionally polished, enhancing the natural luster of the secondary minerals and revealing the internal structure of the shell, including the main chamber and the phragmocone. The origin of this fossil is Madagascar, an area renowned for its high-quality Cretaceous ammonite specimens. These extinct marine organisms inhabited the seas 113–100 million years ago. Preservation in a stable geological setting allowed the fossilization of the shell’s hard tissues, later permineralized by carbonate minerals, which preserved its detailed morphology and unique colorations. The aesthetic of this specimen is further enhanced by meticulous preparation. The mouth portion, or aperture, has been skillfully worked to highlight the internal structure and create a three-dimensional effect that emphasizes the mollusk’s growth spiral. The intricate internal chambers and septa are thus exposed, offering a glimpse into the biology of these ancient cephalopods. Despite its geological age, the specimen presents in excellent preservation condition. A fracture traverses the shell along its length, a feature common in many large fossils, which in this case has been stabilized and professionally prepared. Such intervention ensures the piece’s structural integrity without compromising its aesthetic or scientific value. The absence of a fixed support or base allows free display and appreciation from any angle. A piece like this represents a significant investment for high-end fossil collectors, blending the scientific interest of paleontology with the intrinsic beauty of mineralogy. The combination of substantial size, impeccable preservation, and the vividness of the colors and mineralized patterns makes it a museum-worthy object, capable of enriching any private or public collection dedicated to the history of life on Earth.

Estimation:€550

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