Oxynoticeras Golden Pyrite Ammonite Fossil Jurassic Lyme Regis Dorset Black Ven Marls Stonebarrow Cliff Specimen COA Included

Description

Genuine Oxynoticeras Golden Pyrite Ammonite – Jurassic Coast Treasure from Lyme Regis

Offered here is a striking Oxynoticeras Golden Pyrite Ammonite Fossil, collected from the famous Black Ven Marls at Stonebarrow Cliff, Charmouth, along the world-renowned Jurassic Coast near Lyme Regis, Dorset, UK.

This specimen is a beautifully preserved Early Jurassic ammonite, enhanced by stunning natural golden pyrite mineralisation, giving it a bright metallic finish that makes it highly desirable for collectors and display. Pyritised ammonites from Charmouth are among the most visually impressive fossils found on the UK coast.

The photographs show the exact fossil you will receive, with full sizing clearly visible in the provided images. This is a carefully chosen specimen selected for its quality, preservation, and eye-catching pyrite detail.

Your fossil was discovered by our own team members, Alister and Alison, on 25 January 2026, and has been professionally cleaned, prepped, and treated by Alison, ensuring it is stable, well-presented, and ready for long-term collection.

Every fossil we offer is genuine, and this specimen includes a Certificate of Authenticity with lifetime guarantee, supplied as a generic authenticity card for complete buyer confidence.

Geological Setting – Black Ven Marls, Lower Lias, Early Jurassic

This ammonite originates from the renowned Black Ven Marls, part of the Lower Lias Group, dating to approximately 190–200 million years ago during the Early Jurassic.

At that time, Dorset lay beneath a warm tropical sea rich in marine life, including ammonites, belemnites, fish, crustaceans, and large marine reptiles such as ichthyosaurs. Fine marls and shales accumulated on the seabed, rapidly burying shells and creating ideal conditions for fossil preservation.

Stonebarrow Cliff and Charmouth remain internationally important fossil localities, producing some of the finest ammonites in Europe, including spectacular pyritised examples like this.

Fossil Species – Oxynoticeras Ammonite

Oxynoticeras is a classic Early Jurassic ammonite genus within the subclass Ammonoidea, class Cephalopoda. These marine predators were close relatives of modern squid and cuttlefish, inhabiting Jurassic seas in vast numbers.

Oxynoticeras is known for its distinctive morphology:

• Sharp, compressed whorl profile
• Strong ribbing and keel development
• Streamlined shell form adapted for efficient swimming

This genus is especially associated with Lower Jurassic biostratigraphy and is an important index fossil used for correlating marine strata.

Golden Pyrite Preservation – Unique Natural Beauty

One of the most exceptional aspects of this specimen is its natural golden pyrite mineralisation. Pyrite replacement occurs when iron and sulphur minerals crystallise within the shell during fossilisation, producing a brilliant metallic sheen.

Golden pyrite ammonites from Lyme Regis are particularly prized because:

• They are visually stunning and rare in high quality
• The mineralisation enhances shell detail
• Each specimen is completely unique

This fossil makes an outstanding display piece, combining scientific significance with remarkable natural beauty.

Authenticity, Discovery and Professional Preparation

This is a 100% genuine Oxynoticeras Golden Pyrite Ammonite, responsibly collected and expertly prepared.

• Discovered by Alister and Alison (25 January 2026)
• Cleaned, prepped, and treated by Alison
• Lifetime Certificate of Authenticity included
• Exact specimen shown in photos

Ideal For Collectors, Gifts and Jurassic Displays

Perfect for:

• Ammonite and pyrite fossil collectors
• Jurassic Coast and Lyme Regis enthusiasts
• Museum-quality natural history displays
• Educational geology and palaeontology collections
• Unique prehistoric gifts

A rare opportunity to own an authentic Oxynoticeras Golden Pyrite Ammonite Fossil from Stonebarrow Cliff, Charmouth, preserved from an ancient Jurassic sea nearly 200 million years ago and accompanied by a lifetime Certificate of Authenticity.