Xipheroceras Calcite Ammonite Fossil Jurassic Lyme Regis Dorset Black Ven Marls Stonebarrow Cliff COA Included

Description Genuine Xipheroceras Calcite Ammonite Fossil – Jurassic Coast Treasure Presented here is an exceptional Xipheroceras Fossil Calcite Ammonite, a genuine marine fossil from the iconic Black Ven Marls of Stonebarrow Cliff, Charmouth, on the world-famous Jurassic Coast near Lyme Regis, Dorset, UK. This striking ammonite specimen is preserved with beautiful natural calcite mineralisation, enhancing the shell’s prehistoric detail and making it a superb display fossil for collectors, enthusiasts, or educational purposes. The fossil photographed is the exact specimen you will receive. This is a carefully chosen piece with excellent character, and full sizing details are clearly shown in the accompanying photographs. This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card, providing added confidence for collectors and gift buyers alike. Geological Setting – Black Ven Marls, Lower Lias, Early Jurassic This ammonite originates from the renowned Black Ven Marls, part of the Lower Lias Group, dating back approximately 190–200 million years to the Early Jurassic Period. At that time, the Dorset coastline lay beneath a warm, shallow tropical sea teeming with life. Ammonites, belemnites, marine reptiles, and fish flourished in these nutrient-rich waters. Fine muds settled on the sea floor, burying shells quickly and allowing remarkable fossil preservation. Stonebarrow Cliff and Black Ven are internationally celebrated fossil sites, forming part of the UNESCO-listed Jurassic Coast. The cliffs are famous for yielding ammonites of outstanding quality, often with unique mineral preservation such as calcite replacement. Fossil Type – Xipheroceras Ammonite Xipheroceras is a distinctive genus of Early Jurassic ammonite belonging to: Class: Cephalopoda Subclass: Ammonoidea Order: Ammonitida Superfamily: Eoderoceratoidea Family: Eoderoceratidae Xipheroceras ammonites are admired for their elegant coiling, well-defined ribbing, and often compressed shell form. These fossils represent an ancient group of fast-moving marine predators, related to modern squid and cuttlefish. Ammonites such as Xipheroceras are also important index fossils, widely used by geologists to date and correlate Lower Jurassic rock layers across Europe. Calcite Preservation – Natural Mineral Enhancement This specimen is preserved as a calcite ammonite fossil, meaning the original shell structure has been infilled or replaced by crystalline calcium carbonate during fossilisation. Calcite preservation is prized because it can reveal: Bright, pale mineral detail Enhanced surface texture and ribbing Strong contrast against the marl matrix A unique combination of fossil and mineral beauty No two calcite ammonites are ever identical, making each specimen a completely individual piece of natural history. Authenticity, Quality, and Display Value Every fossil offered is carefully selected and responsibly sourced from classic British fossil beds. Genuine Jurassic ammonite fossil Exact specimen shown in photographs From the historic Lyme Regis fossil coastline Includes Certificate of Authenticity lifetime guarantee card A unique collector-grade calcite preservation piece Perfect For Collectors, Gifts, and Education This Xipheroceras fossil is ideal for: Ammonite fossil collectors Jurassic Coast enthusiasts Geological and palaeontological study Display cabinets, desks, or museum-style shelves A meaningful prehistoric gift A rare opportunity to own a genuine Xipheroceras Calcite Ammonite Fossil from the legendary Lower Jurassic deposits of Dorset, preserved from an ancient sea nearly 200 million years ago and supplied with lifelong authenticity assurance.