Cut & Polished Plesiosaur Limb Bone Fossil – Jurassic Oxford Clay – Callovian – Oxford, England – Genuine Reptile Specimen
£ 120.00
Cut and Polished Plesiosaur Limb Bone Fossil – Oxford Clay Formation – Callovian
Stage, Middle Jurassic – Oxford, EnglandThis 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 FragmentSpecies: Indeterminate Plesiosauria (commonly Muraenosaurus or Cryptoclidus in the region)Order: PlesiosauriaSuperorder: SauropterygiaGeological Stage: Middle Jurassic – Callovian (~164–166 million years ago)Formation: Oxford Clay FormationLocation: Oxford, Oxfordshire, England, United KingdomDepositional Environment: Offshore marine basin – low energy, anoxic conditions ideal for vertebrate preservation in fine-grained muds and claysBiozone/Zone: No narrowly defined ammonite subzone specific to this piece; Oxford Clay fossils span several Callovian zones including Macrocephalites and Kosmoceras assemblagesMorphology 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.
Stage, Middle Jurassic – Oxford, EnglandThis 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 FragmentSpecies: Indeterminate Plesiosauria (commonly Muraenosaurus or Cryptoclidus in the region)Order: PlesiosauriaSuperorder: SauropterygiaGeological Stage: Middle Jurassic – Callovian (~164–166 million years ago)Formation: Oxford Clay FormationLocation: Oxford, Oxfordshire, England, United KingdomDepositional Environment: Offshore marine basin – low energy, anoxic conditions ideal for vertebrate preservation in fine-grained muds and claysBiozone/Zone: No narrowly defined ammonite subzone specific to this piece; Oxford Clay fossils span several Callovian zones including Macrocephalites and Kosmoceras assemblagesMorphology 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.
Other Products
