This listing offers a RARE KOSMOCERAS JASONI ammonite fossil block, beautifully preserved in Oxford Clay from the Callovian stage of the Jurassic period (approximately 166-164 million years ago). Discovered in the Water Park region of Oxford, UK, this exquisite fossil is a testament to the rich marine ecosystems of the Jurassic seas.

Fossil Details:

• Species: Kosmoceras jasoni
• Fossil Type: Ammonite in fossil block
• Geological Formation: Oxford Clay
• Geological Age: Callovian, Jurassic (~166-164 million years old)
• Location: Water Park, Oxford, UK
• Dimensions: Refer to the scale rule (1cm squares) in the photos for precise sizing.
• Provenance: This fossil comes from the prestigious Alice Purnell Collection, renowned for its remarkable specimens of ammonites and other fossils.

About Kosmoceras jasoni:

Kosmoceras jasoni is a species of ammonite known for its intricate ribbing and highly ornamented shells, often featuring pronounced spines and a keeled structure. These cephalopods lived in the shallow marine environments of the Jurassic period and were part of a diverse ecosystem of marine predators and prey. The striking appearance of Kosmoceras shells makes them a favorite among collectors and paleontology enthusiasts alike.

About the Oxford Clay Formation:

The Oxford Clay Formation is one of the most famous fossil-bearing geological formations in the world. Found in southern England, this clay deposit dates to the Middle Jurassic and is known for preserving a variety of marine fossils, including ammonites, belemnites, and marine reptiles. The Callovian stage, specifically, was a time of high marine biodiversity, and fossils from this era provide an incredible window into life over 165 million years ago.

Why This Fossil is Unique:

1. Rare Species: Kosmoceras jasoni is highly sought after due to its distinctive ribbing and decorative shell features.
2. Exceptional Preservation: Embedded within its natural matrix, the ammonite is perfectly highlighted, showcasing the beauty of its fossilized structure.
3. Scientific and Aesthetic Value: A piece of Jurassic history, this fossil appeals to both seasoned collectors and those interested in paleontology.
4. Provenance: Originating from the Alice Purnell Collection, this fossil has an impeccable history and is part of one of the most extensive ammonite collections in the world.

Certificate of Authenticity:

Your purchase includes a Certificate of Authenticity, verifying that this fossil is a 100% genuine specimen. It guarantees the fossil's authenticity, geological formation, and species identification.

Condition and Presentation:

This fossil block has been professionally prepared to emphasize the ammonite while retaining its natural matrix for context and display. It is in excellent condition, as shown in the photos, and ready to be a centerpiece in any fossil collection.

Perfect for Collectors, Educators, and Enthusiasts:

Whether you are a collector of Jurassic ammonites, a teacher seeking educational specimens, or a fossil enthusiast, this Kosmoceras jasoni fossil block is an incredible addition to any collection. Its scientific and visual appeal makes it a standout piece that will spark conversation and admiration.

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

Don't Miss Out!

Secure this RARE Kosmoceras jasoni ammonite fossil block from the Oxford Clay Formation today and own a unique piece of Jurassic history. A fossil of this quality and provenance is a treasure for any collector or enthusiast!