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 Fossil Ammonite CADOCERAS – Oxford Clay, Lower Callovian, Jurassic: Gloucestershire, UK – Genuine & Certified
RARE Fossil Ammonite CADOCERAS – Oxford Clay, Lower Callovian, Jurassic: Gloucestershire, UK – Genuine & Certified - Image 2
RARE Fossil Ammonite CADOCERAS – Oxford Clay, Lower Callovian, Jurassic: Gloucestershire, UK – Genuine & Certified - Image 3

RARE Fossil Ammonite CADOCERAS – Oxford Clay, Lower Callovian, Jurassic: Gloucestershire, UK – Genuine & Certified

£18.00

This listing showcases a scientifically significant and well-preserved fossil ammonite from the genus Cadoceras, dating to the Lower Callovian stage of the Middle Jurassic period. The specimen originates from the Oxford Clay Formation in Gloucestershire, UK, a highly fossiliferous marine deposit well-known among palaeontologists for its diverse and exceptionally preserved ammonite fauna.

Cadoceras is a member of the family Cardioceratidae within the superfamily Stephanoceratoidea, under the order Ammonitida. These ammonites are recognised by their moderately involute to evolute shells, pronounced ribbing, and often broad umbilical area. The shell morphology includes strong primary ribs that bifurcate mid-flank, forming a characteristic ornamentation useful for both aesthetic appreciation and biostratigraphic identification.

Geological & Scientific Details:

  • Scientific Name: Cadoceras sp.
  • Fossil Type: Ammonite (Extinct Marine Cephalopod)
  • Geological Period: Jurassic
  • Stage: Lower Callovian (approx. 166–164 million years ago)
  • Formation: Oxford Clay Formation
  • Location Found: Gloucestershire, United Kingdom
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Cardioceratidae
  • Morphological Features: Moderately evolute shell, broad umbilicus, sharp bifurcating ribs, pronounced whorl cross-section
  • Depositional Environment: Shallow marine shelf with fine-grained silty clays rich in marine invertebrates and vertebrate fossils

Cadoceras species are used as biostratigraphic markers for the Lower Callovian and are often collected for their historic and research value. This particular fossil is an excellent addition to collections focused on British Jurassic faunas.

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

Please Note:

  • Scale Rule Squares / Cube = 1cm – full sizing is visible in the photo
  • You will receive the exact fossil pictured – carefully selected for scientific accuracy, preservation quality, and display appeal

This Cadoceras ammonite fossil offers a rare and tangible glimpse into the Jurassic marine environments that once covered much of the present-day British Isles.

(Actual as seen)

Only 1 left in stock

SKU: UF3775 Category:

Description

This listing showcases a scientifically significant and well-preserved fossil ammonite from the genus Cadoceras, dating to the Lower Callovian stage of the Middle Jurassic period. The specimen originates from the Oxford Clay Formation in Gloucestershire, UK, a highly fossiliferous marine deposit well-known among palaeontologists for its diverse and exceptionally preserved ammonite fauna.

Cadoceras is a member of the family Cardioceratidae within the superfamily Stephanoceratoidea, under the order Ammonitida. These ammonites are recognised by their moderately involute to evolute shells, pronounced ribbing, and often broad umbilical area. The shell morphology includes strong primary ribs that bifurcate mid-flank, forming a characteristic ornamentation useful for both aesthetic appreciation and biostratigraphic identification.

Geological & Scientific Details:

  • Scientific Name: Cadoceras sp.
  • Fossil Type: Ammonite (Extinct Marine Cephalopod)
  • Geological Period: Jurassic
  • Stage: Lower Callovian (approx. 166–164 million years ago)
  • Formation: Oxford Clay Formation
  • Location Found: Gloucestershire, United Kingdom
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Cardioceratidae
  • Morphological Features: Moderately evolute shell, broad umbilicus, sharp bifurcating ribs, pronounced whorl cross-section
  • Depositional Environment: Shallow marine shelf with fine-grained silty clays rich in marine invertebrates and vertebrate fossils

Cadoceras species are used as biostratigraphic markers for the Lower Callovian and are often collected for their historic and research value. This particular fossil is an excellent addition to collections focused on British Jurassic faunas.

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

Please Note:

  • Scale Rule Squares / Cube = 1cm – full sizing is visible in the photo
  • You will receive the exact fossil pictured – carefully selected for scientific accuracy, preservation quality, and display appeal

This Cadoceras ammonite fossil offers a rare and tangible glimpse into the Jurassic marine environments that once covered much of the present-day British Isles.

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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