Promicroceras Ammonite Bed Fossil Calcite Cluster Jurassic Coast Dorset UK Lower Lias Charmouth COA Included

Description

Genuine Promicroceras Ammonite Bed – Calcite Fossil Cluster from Dorset Jurassic Coast

Offered here is an outstanding Promicroceras fossil calcite ammonite bed, a highly collectible multi-ammonite specimen preserved within the famous Black Ven Marls of the Lower Lias Formation along the world-renowned Jurassic Coast of Dorset, England. This remarkable piece comes from Stonebarrow Cliff, Charmouth, Lyme Regis, one of the most productive and internationally important fossil localities in Europe.

Unlike single ammonite finds, an ammonite bed preserves multiple individuals together within their original sedimentary context, creating a striking natural cluster that captures a snapshot of Jurassic seafloor life. This is a carefully chosen specimen, selected for its dense fossil content, strong preservation, and attractive calcite mineralisation.

The photographs show the exact fossil you will receive, with full sizing clearly visible in the provided images.

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

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 was submerged beneath a warm, shallow marine sea rich in ammonites, belemnites, fish, and large marine reptiles such as ichthyosaurs and plesiosaurs.

The Black Ven Marls were deposited in a relatively calm offshore environment where fine muds accumulated slowly on the seabed. Periodic burial events, combined with low oxygen bottom conditions, allowed shells to be preserved in remarkable detail and sometimes concentrated into fossil-rich layers such as ammonite beds.

Stonebarrow Cliff and the Charmouth coastline are internationally celebrated for producing some of the finest Lower Jurassic ammonites in the world, making fossils from this locality exceptionally desirable.

Fossil Species – Promicroceras Ammonites

Promicroceras is a distinctive genus of Early Jurassic ammonite belonging to the extinct subclass Ammonoidea, within the class Cephalopoda. Ammonites were marine molluscs related to modern squid and cuttlefish and were among the most diverse and abundant predators of Jurassic seas.

Promicroceras is well known for its tightly coiled shell, fine ribbing, and elegant whorl geometry. These ammonites are classic Lower Lias fossils and play an important role in understanding Early Jurassic marine ecosystems.

Ammonites like Promicroceras are also valuable as index fossils, helping geologists date and correlate Lower Jurassic rock layers across the Jurassic Coast and beyond.

Ammonite Bed Preservation – Natural Cluster Display

This specimen represents a true ammonite bed, preserving multiple ammonites together in the same rock matrix. These clusters are highly collectible because they:

• Provide a natural concentration of fossils in one piece
• Capture a snapshot of an ancient Jurassic seafloor event
• Offer greater visual impact than single ammonites
• Are rarer and more scientifically interesting as sedimentary fossils

Such specimens are ideal for display and educational purposes, showing how ammonites accumulated in layers during Jurassic times.

Calcite Mineralisation and Visual Appeal

This ammonite bed displays attractive calcite preservation, formed when mineral-rich fluids replaced or infilled the original shells during fossilisation. Calcite ammonites often show enhanced contrast and subtle crystalline highlights, giving the fossils a bright, striking appearance against the darker Jurassic matrix.

The combination of multiple ammonites and calcite mineralisation creates a truly impressive collector fossil.

Authenticity and Collector Confidence

This is a 100% genuine Promicroceras calcite ammonite bed fossil, responsibly sourced from Stonebarrow Cliff on the Dorset Jurassic Coast.

It includes a lifetime Certificate of Authenticity, ensuring complete confidence in provenance and genuineness.

Ideal For Collectors, Gifts and Educational Displays

This fossil is perfect for:

• Ammonite and Jurassic fossil collectors
• Multi-ammonite cluster and fossil bed enthusiasts
• Charmouth and Lyme Regis Jurassic Coast fans
• Museum-quality natural history displays
• Unique prehistoric gifts from England

A rare opportunity to own an authentic Promicroceras ammonite bed fossil cluster from the legendary Black Ven Marls of Charmouth, preserved from an ancient sea nearly 200 million years ago and accompanied by a lifetime Certificate of Authenticity.