Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.

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Cut & Polished Plesiosaur Limb Bone Fossil – Jurassic Oxford Clay – Callovian – Oxford, England – Genuine Reptile Specimen
Cut & Polished Plesiosaur Limb Bone Fossil – Jurassic Oxford Clay – Callovian – Oxford, England – Genuine Reptile Specimen - Image 2

Cut & Polished Plesiosaur Limb Bone Fossil – Jurassic Oxford Clay – Callovian – Oxford, England – Genuine Reptile Specimen

Original price was: £120.00.Current price is: £108.00.

Cut and Polished Plesiosaur Limb Bone Fossil – Oxford Clay Formation – Callovian Stage, Middle Jurassic – Oxford, England

This listing features a cut and polished fossil limb bone fragment from a Plesiosaur, a majestic marine reptile that roamed the Jurassic seas. Recovered from the iconic Oxford Clay Formation near Oxford, England, this genuine vertebrate specimen has been carefully sectioned and polished to reveal the stunning internal bone structure preserved for over 160 million years.

Fossil Type: Vertebrate – Limb Bone Fragment

Species: Indeterminate Plesiosauria (commonly Muraenosaurus or Cryptoclidus in the region)

Order: Plesiosauria

Superorder: Sauropterygia

Geological Stage: Middle Jurassic – Callovian (~164–166 million years ago)

Formation: Oxford Clay Formation

Location: Oxford, Oxfordshire, England, United Kingdom

Depositional Environment: Offshore marine basin – low energy, anoxic conditions ideal for vertebrate preservation in fine-grained muds and clays

Biozone/Zone: No narrowly defined ammonite subzone specific to this piece; Oxford Clay fossils span several Callovian zones including Macrocephalites and Kosmoceras assemblages

Morphology Features: The fossil reveals classic Plesiosaur bone structure, with densely mineralised cancellous (spongy) bone and outer cortical bone, often dark brown to black in colour due to phosphate-rich diagenesis. Plesiosaurs had paddle-like limbs for swimming, and this specimen likely represents a cross-section from one of the limb elements such as a humerus or femur.

Geological Context: The Oxford Clay Formation is world-renowned for its marine fossil content, including ammonites, bivalves, fish, and marine reptiles such as Ichthyosaurs and Plesiosaurs. The fine clay sediments deposited in deep marine basins allowed for excellent fossil preservation, making this a classic site for Jurassic palaeontology.

Condition: Polished limb bone cross-section with natural surface and visible inner structure. Exact specimen shown in the photos. Scale rule square/cube = 1cm. Full sizing available in image.

Important Note:

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

This is a rare and scientifically valuable piece from the age of marine reptiles, ideal for collectors, display, or educational purposes.

(Actual as seen)

Only 1 left in stock

SKU: VF0263 Category:

Description

Cut and Polished Plesiosaur Limb Bone Fossil – Oxford Clay Formation – Callovian Stage, Middle Jurassic – Oxford, England

This listing features a cut and polished fossil limb bone fragment from a Plesiosaur, a majestic marine reptile that roamed the Jurassic seas. Recovered from the iconic Oxford Clay Formation near Oxford, England, this genuine vertebrate specimen has been carefully sectioned and polished to reveal the stunning internal bone structure preserved for over 160 million years.

Fossil Type: Vertebrate – Limb Bone Fragment

Species: Indeterminate Plesiosauria (commonly Muraenosaurus or Cryptoclidus in the region)

Order: Plesiosauria

Superorder: Sauropterygia

Geological Stage: Middle Jurassic – Callovian (~164–166 million years ago)

Formation: Oxford Clay Formation

Location: Oxford, Oxfordshire, England, United Kingdom

Depositional Environment: Offshore marine basin – low energy, anoxic conditions ideal for vertebrate preservation in fine-grained muds and clays

Biozone/Zone: No narrowly defined ammonite subzone specific to this piece; Oxford Clay fossils span several Callovian zones including Macrocephalites and Kosmoceras assemblages

Morphology Features: The fossil reveals classic Plesiosaur bone structure, with densely mineralised cancellous (spongy) bone and outer cortical bone, often dark brown to black in colour due to phosphate-rich diagenesis. Plesiosaurs had paddle-like limbs for swimming, and this specimen likely represents a cross-section from one of the limb elements such as a humerus or femur.

Geological Context: The Oxford Clay Formation is world-renowned for its marine fossil content, including ammonites, bivalves, fish, and marine reptiles such as Ichthyosaurs and Plesiosaurs. The fine clay sediments deposited in deep marine basins allowed for excellent fossil preservation, making this a classic site for Jurassic palaeontology.

Condition: Polished limb bone cross-section with natural surface and visible inner structure. Exact specimen shown in the photos. Scale rule square/cube = 1cm. Full sizing available in image.

Important Note:

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

This is a rare and scientifically valuable piece from the age of marine reptiles, ideal for collectors, display, or educational purposes.

Additional information

Era

Jurassic
Origin

United Kingdom

Jurassic Information

The Jurassic Period (201–145 million years ago) was the golden age of dinosaurs, with iconic species like Brachiosaurus, Stegosaurus, and Allosaurus dominating the land. It was a time of warm, humid climates, with high sea levels that created vast shallow seas, supporting abundant marine reptiles, ammonites, and early coral reefs. The first birds, such as Archaeopteryx, evolved from small theropod dinosaurs, while early mammals remained small and nocturnal. Lush forests of cycads, conifers, and ferns covered the land, providing food for giant herbivores. The breakup of the supercontinent Pangaea accelerated, shaping Earth's geography and setting the stage for the diverse ecosystems of the Cretaceous.

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