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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RARE 8" Eboraciceras dissimili Fossil Ammonite, Oxford Clay Oxfordian Jurassic, NORTHMOOR OXON UK
RARE 8" Eboraciceras dissimili Fossil Ammonite, Oxford Clay Oxfordian Jurassic, NORTHMOOR OXON UK - Image 2

RARE 8″ Eboraciceras dissimili Fossil Ammonite, Oxford Clay Oxfordian Jurassic, NORTHMOOR OXON UK

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

A remarkable and rare 8″ Eboraciceras dissimili fossil ammonite, expertly preserved within the Oxford Clay Formation, dated to the Oxfordian Stage of the Upper Jurassic Period, found at Northmoor, Oxfordshire (Oxon), United Kingdom.

This large and uncommon ammonite species, Eboraciceras dissimili, is known for its coarsely ribbed shell and significance in regional biostratigraphy. It is part of the:

  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Cardioceratidae

Morphological Features:

  • Robust shell structure with strongly defined, spaced ribs
  • Evolute coiling with all whorls visible
  • Slightly compressed whorls and a broad venter
  • Ornamentation includes distinct radial ribs and occasional tubercles, giving it a textured appearance

Geological Context:

  • Formation: Oxford Clay
  • Stage: Oxfordian (Upper Jurassic)
  • Age: Approximately 163.5 to 157.3 million years ago
  • Locality: Northmoor, near Oxford, UK
  • Depositional Environment: Marine shelf setting within a low-energy, offshore environment; the Oxford Clay is renowned for preserving marine life including ammonites, marine reptiles, and bivalves.
  • Biozone: May correspond to the Cardioceras cordatum or Eboraciceras dissimili zone in regional zonation schemes, though correlation varies

Notable Information:

  • Fossils from the Oxford Clay are prized for their three-dimensional preservation in soft, organic-rich sediments
  • Eboraciceras is a relatively rare genus and often sought after by collectors and researchers
  • Formally described in the mid-20th century as part of studies of Upper Jurassic ammonite fauna of the UK

This listing includes actual photographs of the fossil you will receive, including a 1cm square scale cube for accurate measurement. It is a carefully selected specimen, showcasing the best in British Jurassic fossil preservation.

Authenticity Guaranteed: As with all our specimens, this fossil is 100% genuine and comes with a Certificate of Authenticity. It makes an outstanding addition to any palaeontological collection, suitable for display, research, or educational use.

Please view all images for full details and sizing. A rare opportunity to own a spectacular ammonite from the iconic Oxford Clay of Oxfordshire.

(Actual as seen)

Only 1 left in stock

SKU: UF3857 Category:

Description

A remarkable and rare 8″ Eboraciceras dissimili fossil ammonite, expertly preserved within the Oxford Clay Formation, dated to the Oxfordian Stage of the Upper Jurassic Period, found at Northmoor, Oxfordshire (Oxon), United Kingdom.

This large and uncommon ammonite species, Eboraciceras dissimili, is known for its coarsely ribbed shell and significance in regional biostratigraphy. It is part of the:

  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Cardioceratidae

Morphological Features:

  • Robust shell structure with strongly defined, spaced ribs
  • Evolute coiling with all whorls visible
  • Slightly compressed whorls and a broad venter
  • Ornamentation includes distinct radial ribs and occasional tubercles, giving it a textured appearance

Geological Context:

  • Formation: Oxford Clay
  • Stage: Oxfordian (Upper Jurassic)
  • Age: Approximately 163.5 to 157.3 million years ago
  • Locality: Northmoor, near Oxford, UK
  • Depositional Environment: Marine shelf setting within a low-energy, offshore environment; the Oxford Clay is renowned for preserving marine life including ammonites, marine reptiles, and bivalves.
  • Biozone: May correspond to the Cardioceras cordatum or Eboraciceras dissimili zone in regional zonation schemes, though correlation varies

Notable Information:

  • Fossils from the Oxford Clay are prized for their three-dimensional preservation in soft, organic-rich sediments
  • Eboraciceras is a relatively rare genus and often sought after by collectors and researchers
  • Formally described in the mid-20th century as part of studies of Upper Jurassic ammonite fauna of the UK

This listing includes actual photographs of the fossil you will receive, including a 1cm square scale cube for accurate measurement. It is a carefully selected specimen, showcasing the best in British Jurassic fossil preservation.

Authenticity Guaranteed: As with all our specimens, this fossil is 100% genuine and comes with a Certificate of Authenticity. It makes an outstanding addition to any palaeontological collection, suitable for display, research, or educational use.

Please view all images for full details and sizing. A rare opportunity to own a spectacular ammonite from the iconic Oxford Clay of Oxfordshire.

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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