Description
Rare Cadoceras sublaeve Fossil Ammonite – Lower Callovian Stage, Jurassic Period – Ashton Keynes, United Kingdom
This listing features a rare Cadoceras sublaeve fossil ammonite from the Lower Callovian stage of the Jurassic period, discovered in the Kellaways Clay Formation at Ashton Keynes, United Kingdom. This authentic specimen showcases the classic coiled shell and fine ribbing typical of the Cadoceras genus, making it a stunning addition to any fossil collection.
About Cadoceras sublaeve:
Cadoceras sublaeve is a species of ammonite known for its finely ribbed, planispiral shell, and holds significant value in biostratigraphic studies of the Jurassic period. As an extinct marine cephalopod, it thrived in the shallow seas of the Middle Jurassic and played an important role in the marine ecosystem of its time.
Geological Context:
- Formation: Kellaways Clay Formation
- Age: Lower Callovian, Jurassic (~166 – 163 million years ago)
- Location: Ashton Keynes, United Kingdom
The Lower Callovian stage is recognized for its rich marine deposits, especially within the Kellaways Clay, which is known for its abundant ammonite fossils. This geological formation offers an extraordinary window into the marine life of the Middle Jurassic seas.
Fossil Details:
- 100% Genuine Cadoceras sublaeve Ammonite
- Age: Lower Callovian, Jurassic (~166 – 163 million years ago)
- Origin: Ashton Keynes, United Kingdom
- Beautiful Natural Preservation with Detailed Ribbing
- Scale Rule Squares/Cube = 1cm (Please refer to photos for full sizing)
- Comes with a Certificate of Authenticity
- From the esteemed Alice Purnell Collection, one of the world’s largest ammonite collections
Why This Specimen is Special:
- Rare Middle Jurassic Ammonite from the UK
- Excellent preservation with intricate shell details
- Ideal for Collectors, Museums, or Educational Displays
- Carefully curated for its scientific and historical significance
- A valuable addition to any fossil or natural history collection
This Cadoceras sublaeve ammonite fossil offers a rare glimpse into Earth’s prehistoric marine ecosystems and is perfect for fossil enthusiasts, educators, and collectors.
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Don’t miss the opportunity to own this unique piece of Jurassic marine history!







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