Xipheroceras Calcite Ammonite Fossil Jurassic Coast Dorset UK Lower Lias Black Ven Marls Charmouth COA Included

Description

Genuine Xipheroceras Calcite Ammonite – Jurassic Coast Fossil from Dorset, UK

Offered here is an excellent Xipheroceras fossil calcite ammonite, preserved within 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 productive and historically important fossil localities in Europe.

This is a carefully chosen piece, selected for its striking preservation, distinctive shell form, 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 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 period, 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 on the seafloor. Low oxygen conditions helped prevent decay and disturbance, allowing shells like this ammonite to fossilise with remarkable clarity.

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 highly collectible.

Fossil Species – Xipheroceras Ammonite

Xipheroceras 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 abundant and diverse predators of Jurassic seas.

Xipheroceras is particularly recognised for its elegant shell form, often showing pronounced ribbing and a graceful spiral whorl structure. These ammonites lived as active swimmers, using jet propulsion to navigate the Jurassic oceans and hunting smaller marine organisms.

Ammonites such as Xipheroceras are also valuable scientifically as index fossils, helping geologists date and correlate Lower Lias rock layers across the Jurassic Coast and beyond.

Calcite Preservation and Fossil Features

This specimen displays attractive calcite preservation, created when mineral-rich fluids replaced or infilled the original shell during fossilisation. Calcite ammonites often show enhanced contrast, subtle crystalline highlights, and a bright, refined appearance that stands out beautifully against the surrounding Jurassic matrix.

The fossil retains its natural spiral geometry and ribbed ornamentation, making it an excellent collector specimen and a striking display fossil.

Xipheroceras fossils are especially sought after due to their distinctive morphology and connection to the iconic ammonite beds of Charmouth and Lyme Regis.

Authenticity and Collector Confidence

This is a 100% genuine Xipheroceras calcite ammonite 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
• Charmouth and Lyme Regis Jurassic Coast enthusiasts
• Calcite mineral and fossil lovers
• Natural history displays and geology collections
• Unique prehistoric gifts from England

A wonderful opportunity to own an authentic Xipheroceras calcite ammonite 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.