Fossilized Cleoniceras Ammonite with exceptional...

A highly conserved Cleoniceras specimen with extraordinary mineralized sutural patterns — This Ammonite Cleoniceras specimen, originating from Madagascar geological formations, represents a fossil of notable paleontological and collecting interest. The species Cleoniceras, typical of the Early Cretaceous (Upper 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 an exceptional secondary mineralization, with a predominance of aragonite that gives warm hues from deep orange to reddish-brown, interrupted by portions of whitish calcite. The suture patterns, intricate and fern-like, emerge with sharpness against the dark gray-brown background, creating an attractive 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 body 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 environment allowed the hard tissues of the shell to fossilize, subsequently permineralized by carbonate minerals, which preserved its detailed morphology and unique coloration. The aesthetics of this specimen are further enhanced by careful preparation. The aperture, or opening, has been deftly 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 cross-section of the biology of these ancient cephalopods. Despite its geologic age, the specimen is in excellent preservation condition. A fracture traverses the shell lengthwise, a common feature 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 it to be displayed and appreciated freely from every angle. A piece like this represents a significant investment for high-end fossil collectors, combining the scientific interest of paleontology with the intrinsic beauty of mineralogy. The combination of substantial size, flawless preservation, and the vivid colors and mineralized patterns makes it a museum-quality object capable of enriching any private or public collection dedicated to the history of life on Earth.

Estimación:€550

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