1.5in Asteroceras Calcite Ammonite Fossil Jurassic Coast Dorset UK Lower Lias Black Ven Marls Charmouth COA Included

Description

Genuine 1.5″ Asteroceras Calcite Ammonite – Jurassic Coast Fossil from Dorset

Offered here is a beautiful 1.5 inch Asteroceras calcite ammonite fossil, 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 important ammonite fossil localities in Europe.

This is a carefully chosen piece, selected for its strong shell detail, attractive calcite preservation, and excellent presentation. 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 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 lay beneath a warm, shallow marine sea rich in ammonites, belemnites, fish, and marine reptiles such as ichthyosaurs and plesiosaurs.

The Black Ven Marls were deposited in a quiet offshore environment where fine sediments settled gently onto the seabed. These conditions, combined with low oxygen levels, allowed shells to fossilise with exceptional detail.

Stonebarrow Cliff and the Charmouth coastline are internationally famous for producing some of the finest Lower Jurassic ammonites in the world, making fossils from this area highly collectible.

Fossil Species – Asteroceras Ammonite

Asteroceras is a classic Lower Jurassic ammonite genus belonging to the subclass Ammonoidea, within the class Cephalopoda. Ammonites were marine molluscs related to modern squid and cuttlefish, and they were among the most abundant and diverse predators of Jurassic seas.

Asteroceras is particularly valued for its robust spiral shell, bold ribbing, and distinctive whorl shape. Specimens from the Lower Lias are important both for collectors and for scientific study, as ammonites such as Asteroceras serve as key index fossils used to date Jurassic marine rocks.

This genus is associated with Early Jurassic ammonite zones, helping geologists correlate strata across the Jurassic Coast and beyond.

Calcite Preservation and Fossil Features

This specimen displays beautiful calcite preservation, where mineral-rich fluids replaced or infilled the original shell material during fossilisation. Calcite ammonites often show enhanced contrast and crystalline highlights, making them especially attractive display fossils.

The ammonite retains its natural spiral structure and ribbing, and the combination of fossil shell with calcite mineralisation creates a striking piece of prehistoric natural history.

At 1.5 inches, this specimen is an ideal size for collectors, offering excellent detail while remaining convenient for display in cabinets, desks, or educational collections.

Authenticity and Collector Confidence

This is a 100% genuine Asteroceras 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
• Mineral and calcite fossil lovers
• Natural history and geology displays
• Unique prehistoric gifts from England

A wonderful opportunity to own an authentic 1.5″ Asteroceras 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.