Description
Fossil Bony Fish Vertebra – London Clay Formation, Eocene Epoch, Bawdsey, Suffolk, UK
This genuine Fossil Bony Fish Vertebra comes from the renowned London Clay Formation at Bawdsey, Suffolk, one of the most important early Cenozoic fossil sites in the United Kingdom. Dating to the Eocene Epoch, this fossil represents a real vertebra from an ancient marine bony fish that lived between 56 and 47 million years ago. The specimen shown in the photos is the exact type and quality you will receive, selected carefully for clarity, detail, and preservation. A 1 cm scale cube is included to provide accurate size reference. All of our Fossils are 100% Genuine Specimens and come with a Certificate of Authenticity.
Geological Age and Formation
The vertebra originates from the Lower Eocene (Ypresian Stage), part of the highly fossiliferous London Clay Formation, a deposit created when a warm, subtropical sea covered large areas of southern and eastern England. The London Clay is famous worldwide for its rich marine fossil content, preserving an incredible diversity of life from early mammals to crocodiles, sharks, fish, crabs, nautiloids, shells, and driftwood.
These fossils were formed in a calm offshore marine environment, where slow sedimentation of fine mud allowed even delicate skeletal structures to be preserved intact.
Fossil Type, Species, and Classification
Fossil Type
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Bony Fish Vertebra (Teleost) – representing the backbone of a marine ray-finned fish.
Taxonomic Context
Isolated vertebrae from the London Clay typically belong to various teleost groups, including:
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Perciformes (perches and related fishes)
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Elopiformes (tarpon-like fishes)
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Clupeiformes (herring-like fishes)
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Aulopiformes (lizardfishes and allies)
These groups were abundant in the warm Eocene seas and are well documented throughout the formation.
Morphological Features
This fossil vertebra typically exhibits:
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Spool-shaped centrum, with rounded anterior and posterior articulation surfaces
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Visible nutrient grooves and radial striations, showing internal bone structure
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Strong mineralisation, giving the fossil its durable and weighty feel
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Clean central canal opening, where the fish’s spinal cord once ran
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Fine surface textures, preserved in impressive detail due to low-energy deposition
These characteristics allow paleontologists to identify teleost vertebrae with high confidence, even when isolated.
Depositional Environment
The London Clay seas were:
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Warm, subtropical, and nutrient-rich
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Home to abundant marine fauna, including fish, sharks, rays, and marine reptiles
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Influenced by periodic storms and river outflow
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Characterised by low-oxygen seafloor conditions, ideal for fossil preservation
Sediments built up gradually, entombing remains before they could be scavenged or degrade. Bawdsey’s coastal exposures are especially well known for yielding vertebrae, shark teeth, and other small fossils washed out by longshore drift.
Scientific Importance
Fossil fish vertebrae from the London Clay contribute greatly to our understanding of:
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Early Eocene marine biodiversity
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Teleost evolution following the Paleocene–Eocene Thermal Maximum
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Paleoecological food webs, including predator–prey relationships
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Climatic conditions in early Cenozoic Europe
They form an important part of Britain’s paleontological heritage and are prized by both researchers and collectors.
Collector Grade and Display Appeal
Each vertebra has been selected for:
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Strong morphological detail
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Excellent preservation
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Attractive natural colouring typical of London Clay fossils
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Clear and recognisable anatomical features
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Suitability for display or educational use
Though modest in size, these specimens offer exceptional scientific and historical value.
Ideal for Collectors, Students, Educators, and Enthusiasts
This Fossil Bony Fish Vertebra from the Eocene London Clay of Bawdsey is a fascinating and affordable piece for anyone interested in the ancient seas that once covered Britain. With its age, quality, and geological importance, it represents a wonderful addition to any fossil collection or natural history display.






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