Cadoceras Ammonite Fossil Jurassic Oxford Clay Gloucestershire UK Display COA Genuine Lower Callovian British Specimen

Description

Cadoceras Fossil Ammonite

This Cadoceras fossil ammonite is a genuine Jurassic specimen from the Oxford Clay of Gloucestershire, UK. Dating from the Lower Callovian stage of the Jurassic Period, this carefully chosen ammonite is an attractive and scientifically interesting fossil from one of Britain’s most important marine clay formations. The photograph shows the actual fossil specimen you will receive, allowing you to view the real preservation, colour, shell form, surface detail, and overall character of the piece before purchase. For full sizing, please see the photo.

This fossil includes a Certificate of Authenticity lifetime guarantee generic card, giving reassurance that the specimen is genuine and suitable for collectors, educators, fossil enthusiasts, and natural history displays.

Fossil Type and Ammonite Features

Cadoceras is an extinct genus of ammonite, a group of shelled marine cephalopods related to modern squid, cuttlefish, and nautilus. Ammonites lived in ancient seas and are among the most recognisable fossils of the Jurassic Period. Their coiled shells were divided into internal chambers, which helped the living animal regulate buoyancy while moving through the water.

Cadoceras ammonites are particularly associated with Middle Jurassic marine deposits, including the Oxford Clay. They are often recognised by their rounded whorl profile, compact coiling, and strong ammonite form. Depending on preservation, specimens may show shell curvature, whorl structure, ribbing, natural mineralisation, and the fossilised remains of the original chambered shell. These features make Cadoceras a desirable ammonite for collectors who appreciate classic Jurassic fossils with strong geological provenance.

Oxford Clay and Lower Callovian Geology

The Oxford Clay is a famous Jurassic marine formation made up largely of clay-rich sediments deposited in an ancient sea. During the Lower Callovian, much of what is now central and southern England was covered by a warm marine environment. Fine muds settled on the sea floor, gradually burying shells and other remains that later became compacted, mineralised, and preserved as fossils.

The Oxford Clay is well known for its rich fossil record, including ammonites, belemnites, bivalves, fossil fish, marine reptiles, and other sea life. Ammonites such as Cadoceras are especially important because their rapid evolution and widespread distribution help geologists date and correlate Jurassic rock layers. A Cadoceras fossil from the Lower Callovian therefore represents both an attractive natural specimen and a meaningful piece of geological history from Britain’s Jurassic seas.

Jurassic Marine Environment

When this ammonite was alive, Gloucestershire lay beneath a marine basin inhabited by a diverse range of prehistoric sea creatures. Ammonites moved through the water column alongside belemnites, fish, and other marine animals, while shells and organic material accumulated on the sea floor below. The clay-rich conditions of the Oxford Clay helped preserve fossils by enclosing remains in fine sediment, protecting them from destruction and allowing mineralisation to take place over millions of years.

This specimen offers a direct connection to that ancient environment. Its coiled shell form reflects the elegant design of ammonites, while its Oxford Clay provenance places it within one of the UK’s most collectable Jurassic fossil settings.

Collector Appeal and Display Value

This Cadoceras ammonite is ideal for collectors of British fossils, Jurassic ammonites, Oxford Clay fossils, Lower Callovian specimens, and natural history display pieces. Its Gloucestershire origin gives it strong UK locality appeal, while its ammonite form makes it instantly recognisable and attractive in a collection.

The fossil is sold as a genuine specimen, not a replica or cast. The actual fossil shown in the photo is the exact piece you will receive, so you can buy with confidence. With its Cadoceras identification, Jurassic Oxford Clay provenance, Lower Callovian age, carefully chosen quality, and included Certificate of Authenticity lifetime guarantee generic card, this is a desirable fossil for any collection focused on ammonites, British geology, or prehistoric marine life.