Oxynoticeras Golden Pyrite Ammonite Fossil Jurassic Coast Dorset UK Lower Lias Black Ven Marls Charmouth Specimen COA Included

Description

Genuine Oxynoticeras Golden Pyrite Ammonite – Jurassic Coast Treasure from Dorset

Offered here is a striking and highly collectible Oxynoticeras golden pyrite ammonite fossil, collected from the famous Black Ven Marls of the Lower Lias Formation, along the world-renowned Jurassic Coast of Dorset, England. This specimen comes from Stonebarrow Cliff, Charmouth, Lyme Regis, one of the most celebrated localities in Europe for beautifully preserved Early Jurassic ammonites.

This is a carefully chosen specimen, selected for its exceptional visual appeal, strong shell detail, and attractive pyrite preservation. The photographs show the exact fossil you will receive, with full sizing details clearly visible in the provided images.

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

Importantly, this specimen was discovered by our own experienced team members, Alister and Alison, on 22 January 2026, and has been professionally cleaned, prepped, and treated by Alison, ensuring excellent presentation and long-term stability.

Geological Setting – Black Ven Marls, Lower Lias

This fossil originates from the famous Black Ven Marls, part of the Lower Lias Group, dating to the Early Jurassic approximately 190–200 million years ago. During this time, Dorset lay beneath a warm, shallow marine sea filled with ammonites, belemnites, fish, and large marine reptiles.

The marls were deposited in a relatively quiet offshore environment where fine sediments accumulated on the seabed. Low oxygen conditions reduced scavenging and decay, allowing shells to fossilise in outstanding detail.

Stonebarrow Cliff and the Charmouth coastline are internationally famous for yielding some of the finest ammonite fossils in the world, making specimens from this locality especially desirable.

Fossil Species – Oxynoticeras Ammonite

Oxynoticeras is a distinctive genus of Early Jurassic ammonite belonging to the extinct subclass Ammonoidea, within the class Cephalopoda. Ammonites were marine molluscs closely related to modern squid and cuttlefish and were among the most successful predators of Jurassic oceans.

Oxynoticeras is recognised for its elegant coiled shell shape and compressed whorl profile, often with strong ribbing patterns that reflect growth stages and hydrodynamic adaptations.

This genus is also significant as an important Lower Jurassic index fossil, helping geologists date and correlate marine strata across Europe. Collectors prize Oxynoticeras for both its scientific importance and striking aesthetic form.

Golden Pyrite Preservation and Visual Features

This specimen displays exceptional golden pyrite mineralisation, sometimes called “fool’s gold,” which occurs when the original shell material is replaced or infilled during fossilisation. Pyrite preservation can produce brilliant metallic lustre, enhancing the fossil’s beauty and making it a standout display piece.

The ammonite retains its characteristic spiral structure, with visible ribbing across the whorls. The combination of Jurassic shell form and golden pyrite gives this fossil a unique visual presence, highly sought after by collectors of both fossils and minerals.

Preparation, Provenance and Authenticity

This is a 100% genuine Oxynoticeras pyrite ammonite fossil, responsibly collected on the Dorset Jurassic Coast. Found personally by Alister and Alison, and expertly cleaned and stabilised by Alison, this specimen offers real provenance and professional preparation.

A lifetime Certificate of Authenticity is included with every purchase for complete buyer confidence.

Ideal For Collectors, Gifts and Educational Displays

This fossil is perfect for:

• Ammonite and Jurassic fossil collectors
• Pyrite fossil and mineral enthusiasts
• Lyme Regis and Charmouth Jurassic Coast fans
• Natural history and geology displays
• Unique prehistoric gifts with discovery provenance

A rare opportunity to own an authentic golden pyrite Oxynoticeras ammonite from the legendary Black Ven Marls of Charmouth, discovered and prepared by our own expert team and preserved from an ancient sea nearly 200 million years old.