Description
Fully Rooted Bothriodon (Anthracothere) Tooth Fossil – Rare Early Mammal
This exceptional and rare fully rooted Bothriodon tooth fossil comes from the Bouldnor Formation at Hamstead Cliff on the Isle of Wight, one of the UK’s most significant Oligocene fossil localities. The specimen shown in the photographs is the exact fossil you will receive, carefully selected for its outstanding preservation and completeness. This is a genuine fossil and includes a fully hand-signed Premium Certificate of Authenticity, offering both assurance and added collector value.
Discovery and Professional Preparation
Your specimen was discovered by our trusted team members, Alister and Alison, ensuring full provenance from field to collection. Following excavation, the fossil was expertly cleaned, stabilised, and prepared by Alison, preserving delicate anatomical details while enhancing the natural appearance. This careful preparation allows the full structure of the tooth, including its root, to be clearly appreciated—something rarely preserved in mammal fossils.
Geological Context – Bouldnor Formation, Oligocene Epoch
Dating to the Oligocene epoch, approximately 23 to 34 million years ago, the Bouldnor Formation represents a time of warm, humid climates with extensive freshwater and estuarine environments across southern Britain. Hamstead Cliff is particularly renowned for its diverse vertebrate fossil assemblage, including reptiles, mammals, and plant remains. The low-energy depositional conditions of rivers, lagoons, and floodplains provided ideal circumstances for preserving robust elements such as teeth, especially those retaining their full root structure.
About Bothriodon – Anthracothere Mammal
Bothriodon is an extinct genus of anthracotheres, belonging to the order Artiodactyla and family Anthracotheriidae. These early mammals are considered close relatives of modern hippopotamuses and share similar semi-aquatic lifestyles. They inhabited river margins, wetlands, and swampy environments, feeding primarily on vegetation. Bothriodon species were medium-sized animals with elongated skulls and powerful jaws, well adapted for browsing and grazing in lush prehistoric ecosystems.
Tooth Morphology – Fully Rooted Preservation
This specimen is particularly desirable due to its fully rooted condition, a rare feature that provides a more complete understanding of the tooth’s original anatomy. The crown displays characteristic anthracothere features, including well-defined cusps and ridges designed for grinding plant material. The preserved root offers additional insight into how the tooth was anchored within the jaw, making this fossil especially valuable from both a scientific and collector perspective. The enamel and dentine remain clearly visible, with natural mineralisation enhancing contrast and detail.
Rarity and Collector Significance
Fully rooted mammal teeth from the Bouldnor Formation are far less common than isolated fragments, making this an outstanding opportunity to acquire a high-quality specimen. Anthracothere fossils themselves are relatively scarce compared to marine or reptilian material from the same deposits, further increasing the desirability of this piece. Its combination of rarity, completeness, and provenance makes it ideal for serious collectors, educators, and enthusiasts of prehistoric mammals.
Authenticity, Provenance and Display Appeal
This fossil has been carefully chosen for its scientific importance and aesthetic appeal. Its natural form, combined with professional preparation, makes it a striking display piece suitable for any collection. The inclusion of a fully hand-signed Premium Certificate of Authenticity adds an extra layer of assurance and prestige. Full sizing is available via the photographs provided, ensuring transparency and confidence in your purchase. Each specimen is entirely unique, representing a genuine piece of Britain’s ancient past.








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