Description
Genuine Huge Pliosaur Vertebra Fossil from Dorset
This huge 4.3 inch pliosaur vertebra is a genuine fossil marine reptile bone from the world-famous Kimmeridge Clay Formation of Dorset, UK. Found at Smallmouth, Weymouth, this impressive specimen dates from the Upper Jurassic, Kimmeridgian stage, when southern Britain was covered by warm Jurassic seas rich with ammonites, fish, belemnites, marine reptiles and other ancient ocean life.
The fossil is a carefully chosen specimen, and the photograph shows the actual piece you will receive. Full sizing can be seen in the photo. This fossil includes a fully hand-signed Premium Certificate of Authenticity, making it a highly desirable specimen for collectors of British fossils, Jurassic marine reptile fossils, vertebrate fossils and Kimmeridge Clay Formation material.
Fossil Type and Pliosaur Anatomy
Pliosaurs were powerful marine reptiles belonging to the order Plesiosauria. Unlike the long-necked plesiosaurs, pliosaurs generally had shorter necks, large heads, strong jaws, robust bodies and four paddle-like limbs adapted for life in the sea. They were among the top predators of the Jurassic oceans, feeding on fish, cephalopods and other marine reptiles.
This fossil is a vertebra, part of the backbone of the animal. Vertebrae are important skeletal elements because they helped support the body, protect the spinal cord and connect with surrounding muscles, ribs and other skeletal structures. Pliosaur vertebrae are especially collectable because they represent a direct body fossil from one of the most impressive predatory reptiles of the Mesozoic seas.
The specimen may show natural vertebral features such as the centrum, rounded articular surfaces, fossilised bone texture, mineral-filled areas and natural preservation from the surrounding sediment. Its 4.3 inch size gives it strong visual appeal while still making it suitable for cabinet display, study collections and fossil room arrangements.
Kimmeridge Clay Formation Geology
The Kimmeridge Clay Formation is one of Britain’s most important fossil-bearing Jurassic deposits. It consists largely of dark marine mudstones, shales and clay-rich sediments that were laid down in an ancient sea during the Late Jurassic. These fine-grained sediments often created excellent preservation conditions, especially where low oxygen levels on the seabed slowed decay and helped protect fossil material after burial.
The formation is famous for a wide range of fossils, including ammonites, belemnites, bivalves, fish, ichthyosaurs, plesiosaurs and pliosaurs. Marine reptile fossils from the Kimmeridge Clay are particularly prized because they come from a classic British geological setting with a long history of fossil collecting and palaeontological study.
Upper Jurassic Kimmeridgian Age
This fossil dates from the Upper Jurassic, Kimmeridgian stage, approximately 152 to 157 million years old. During this time, the seas of what is now Dorset supported a rich marine ecosystem. Ammonites and belemnites were abundant, fish provided prey for larger animals, and marine reptiles occupied different levels of the food chain.
Pliosaurs were among the dominant predators in this environment. Their powerful anatomy and active predatory lifestyle make their fossil remains some of the most exciting vertebrate fossils from the Jurassic Period. A pliosaur vertebra from this setting is therefore not only a striking display fossil but also a piece of ancient marine reptile history from one of the UK’s most iconic fossil formations.
Smallmouth, Weymouth, Dorset Location
This specimen comes from Smallmouth, Weymouth, on the Dorset coast. Dorset is internationally recognised for its Jurassic geology and fossil heritage, with coastal exposures that have produced important fossils for collectors, researchers and museums for generations. Fossils from this region are valued for their strong provenance, classic British origin and connection to the ancient marine environments of the Jurassic coast.
The combination of location, formation, age and fossil type makes this pliosaur vertebra a highly collectable specimen. It is suitable for anyone interested in British fossils, Jurassic reptiles, marine predators, fossil bones, vertebrate palaeontology or natural history display pieces.
Display and Authenticity
This huge 4.3 inch pliosaur vertebra has excellent display potential as a genuine Jurassic marine reptile fossil. It would make a strong addition to a fossil cabinet, office display, educational collection, geology room or museum-style natural history arrangement. The photograph shows the actual specimen you will receive, so the colour, preservation, shape and character can be viewed before purchase.
This fossil is a genuine specimen and includes a fully hand-signed Premium Certificate of Authenticity, providing confidence in its authenticity and collectable value.








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