Xipheroceras Calcite Ammonite Fossil Jurassic Coast Black Ven Charmouth Dorset UK

Description

Specimen Overview

Presented here is a genuine Xipheroceras calcite ammonite fossil from the famous Black Ven Marls at Charmouth, near Lyme Regis, Dorset. This specimen has been carefully chosen for its clear preservation, natural presentation, and strong visual contrast between the pale calcite shell and the darker marl matrix. The photographs show the exact fossil you will receive, with full sizing details clearly visible in the images. As with all of our fossils, this piece is 100% genuine and supplied with a Certificate of Authenticity.

Geological Formation & Provenance

This ammonite originates from Black Ven, one of the most prolific and scientifically important fossil localities along the Jurassic Coast, a UNESCO World Heritage Site. The fossil-bearing strata belong to the Lower Lias Group, deposited during the Early Jurassic Period, approximately 199–196 million years ago. The Black Ven Marls consist of fine-grained marine sediments laid down in a relatively low-energy offshore environment. These conditions promoted rapid burial of shells on the seabed, protecting them from physical damage and allowing exceptional fossil preservation.

Fossil Type & Taxonomic Context

Xipheroceras is an extinct genus of ammonite within the Class Cephalopoda, Subclass Ammonoidea, and Order Ammonitida. Ammonites were active, free-swimming marine predators closely related to modern squid and cuttlefish. Xipheroceras is particularly notable within Early Jurassic ammonite assemblages and is valued for its distinctive shell form and stratigraphic importance within the Lower Lias. Fossils of this genus are commonly used in studies of Early Jurassic marine faunas and ammonite evolution.

Morphology & Preservation

This specimen displays the characteristic shell morphology of Xipheroceras, with clearly defined whorls and a recognisable coiled structure preserved in calcite. Calcite replacement has enhanced surface detail while maintaining the original shell geometry, giving the ammonite a subtle crystalline appearance under light. Growth features and shell curvature can be observed, offering insight into the animal’s development during life. The surrounding marl matrix remains intact, preserving the fossil in its original geological context rather than as a detached shell.

Scientific & Collecting Significance

Ammonites from Charmouth and Lyme Regis have been collected and studied for more than two centuries and were instrumental in the early development of geological and stratigraphic science. Specimens from Black Ven are internationally recognised for their reliable provenance and scientific credibility. Xipheroceras is a desirable genus among collectors due to its distinctive form and its association with classic Lower Lias ammonite faunas. Fossils from this locality combine educational value with strong aesthetic appeal.

Display, Care & Authenticity

This fossil is well suited for display in a private collection, educational setting, or natural history cabinet. The specimen has been carefully cleaned to reveal natural features, with no artificial restoration or reconstruction applied. It remains exactly as preserved by nature. You will receive the exact specimen shown, accompanied by a Certificate of Authenticity, confirming its origin and genuine status.

A classic and scientifically meaningful ammonite from one of Britain’s most famous fossil cliffs, this Xipheroceras calcite ammonite represents an authentic piece of Early Jurassic marine history from the Jurassic Coast.