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Size: 3-4cm and 5-6cm
Origin: Madagascar.
Period: Late Cretaceous, 100-66 million years ago.
Species: Likely Desmoceratidae
Appearance: Cut and poslished to show the inner chambers, consiting tof a series of chambers separated by walls (septa). These chambers were used by the ammonite to regulate buoyancy in water.
Please note: The fossil you receive will be chosen at random, but rest assured, we carefully select only high-quality pieces. The photos provided are for reference only, showcasing the natural variation in size, shape, and color.
Species:
They are likely from the Desmoceratidae family, based on the smooth, rounded shell shape, internal chamber structure.
General Morphology: Ammonites from the Desmoceratidae family typically have smooth, involute (tightly coiled) shells without pronounced ridges or spines. The polished fossil in the image shows a rounded, smooth external shell structure, which is characteristic of Desmoceratidae ammonites.
Cretaceous Period: The Desmoceratidae family was widespread during the Cretaceous period, particularly in the Late Cretaceous (100 to 66 million years ago). Since the fossils are from Madagascar, a region known for Late Cretaceous ammonites, this timeframe fits the likely period of the fossils.
Description:
These ammonite fossil slices showcase the internal chamber structure of a prehistoric marine mollusk that lived approximately 100 to 66 million years ago during the Late Cretaceous period. Ammonites, an extinct group of cephalopods related to modern-day squid and octopuses, were characterized by their coiled, spiral shells and intricate internal structures.
This specimen has been expertly cut and polished, revealing the ammonite's unique septa—the walls that divide the shell into chambers. These chambers, known as camerae, were filled with gas or fluid, allowing the ammonite to regulate its buoyancy in the water. The polished surface accentuates the natural beauty of the fossil, with a rich, earthy coloration and clear delineation of the internal spiral geometry.
Sourced from the fossil-rich sedimentary deposits of Madagascar, this ammonite slice offers a glimpse into the prehistoric marine ecosystems of the Late Cretaceous. Fossils from this region are renowned for their exceptional preservation, allowing the detailed suture patterns—where the septa meet the outer shell—to be clearly visible.
This fossil is not only a striking natural artifact but also an important scientific specimen, offering insights into the morphology and life habits of ammonites, which thrived in ancient oceans for over 300 million years before their extinction. Perfect for collectors, educational purposes, or as a unique natural display piece, this ammonite fossil slice connects you to the Earth's distant past.
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About Us
MineralStory Crystals is a UK-based Crystal Shop. We’re passionate about bringing the world’s most beautiful, high-quality crystals and minerals to collectors and enthusiasts. Carefully sourced from around the globe, our pieces offer a stunning glimpse into the natural beauty of raw minerals—at fair prices. We're committed to making these treasures accessible to everyone while giving back. That’s why we donate 10% of our profits to support children with rare diseases. Discover more about our mission and values on our Our Missions page.
At MineralStory, we offer handpicked raw rocks, minerals, and fossils, preserving their natural beauty and authenticity to connect you with Earth's wonders.
Based in London, all orders at MineralStory are prepared and dispatched locally. We also craft our exclusive collection boxes right here in the UK, ensuring quality and care in every detail.
At MineralStory, we meticulously prepare and package each stone with care. For those sending a gift, we offer elegant gift wrapping to make your present truly special.
At MineralStory, our mission extends beyond providing exceptional minerals and fossils. We are committed to giving back by dedicating a portion of our profits to support children with rare diseases. This initiative reflects our belief in making a positive impact, ensuring that every purchase helps foster hope and contribute to meaningful change.
