Description
Rare Diploceras fredericksburgensis Fossil Ammonite
This is a rare Diploceras fredericksburgensis fossil ammonite from the Gault Clay of Folkestone, Kent, United Kingdom. Dating from the Aptian stage of the Cretaceous Period, this carefully chosen specimen is a genuine fossil and includes a Certificate of Authenticity lifetime guarantee generic card. The photograph shows the actual specimen you will receive, allowing collectors to view the fossil’s preservation, natural form, surface texture, colour and individual character before purchase.
Full sizing can be seen in the photo. This is an excellent specimen for collectors of rare ammonites, British fossils, Cretaceous marine fossils, Gault Clay fossils, Folkestone fossils and unusual heteromorph ammonites.
Cretaceous Geology and Age
Diploceras fredericksburgensis dates from the Aptian stage of the Early Cretaceous, approximately 125 to 113 million years old. During this time, southern Britain was covered by warm marine seas, with fine muds and clays accumulating on the seabed. These sediments later formed the famous Gault Clay, one of the United Kingdom’s classic fossil-bearing Cretaceous deposits.
The Gault Clay is especially well known for its beautifully preserved ammonites, bivalves, gastropods, crustaceans, fish remains and other marine fossils. At Folkestone in Kent, the Gault Clay has produced a rich fossil record that is highly valued by collectors and palaeontologists. The fine-grained clay helped preserve delicate shell details and marine fossils that would often be lost in coarser sedimentary environments.
Fossil Type and Species
This specimen is an ammonite, an extinct marine cephalopod related to modern squid, cuttlefish and nautilus. Ammonites lived inside chambered shells, with the animal occupying the final body chamber while the earlier chambers helped regulate buoyancy. This allowed the ammonite to move through the ancient sea and adjust its position in the water column.
Species: Diploceras fredericksburgensis
Genus: Diploceras
Order: Ammonitida
Class: Cephalopoda
Phylum: Mollusca
Diploceras is associated with heteromorph ammonites, a fascinating group of ammonites that developed shell forms different from the familiar flat spiral shape. Heteromorph ammonites may show open coils, curved shafts, hook-like sections or unusual growth forms, making them especially desirable to collectors who want something more distinctive than a standard coiled ammonite.
Morphology and Notable Features
Diploceras fredericksburgensis is valued for its unusual ammonite form and rarity. Heteromorph ammonites represent one of the most visually interesting branches of ammonite evolution, with shell shapes that reflect different growth patterns and possible lifestyle adaptations in Cretaceous seas.
Unlike tightly coiled ammonites, heteromorph forms can show partially uncoiled or irregular shell development. These shapes would still have been chambered internally, allowing the animal to control buoyancy while living in the marine environment. Surface ornamentation, ribbing, curvature, shell section and growth pattern are all important features used in identifying and studying these fossils.
This type of ammonite has strong display appeal because it offers a more unusual and sculptural fossil form. It is suitable for a fossil cabinet, educational collection, natural history display or specialist ammonite collection, particularly for collectors interested in rare Cretaceous cephalopods and British fossil localities.
Folkestone Gault Clay Locality
Folkestone, Kent, is one of the most famous Gault Clay fossil localities in the United Kingdom. The cliffs and foreshore around Folkestone have long been known for producing high-quality Cretaceous fossils, especially ammonites. The Gault Clay was deposited in a marine setting where soft mud accumulated on the seabed, burying shells and other remains in conditions that could allow excellent fossil preservation.
Fossils from this locality are highly collectable because they combine strong British geological heritage with genuine scientific interest. A rare Diploceras fredericksburgensis from the Gault Clay offers an appealing link to the Early Cretaceous seas that once covered Kent and much of southern England.
Authenticity and Collector Appeal
This rare Diploceras fredericksburgensis fossil ammonite is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The fossil has been carefully chosen as a quality collector’s piece, and the photo shows the exact specimen supplied.
As with all genuine fossils, natural cracks, matrix, mineralisation, surface marks, preparation marks, colour variation and age-related wear may be present. These are normal features of authentic fossils and form part of the specimen’s individual geological history. This Aptian Cretaceous ammonite from the Gault Clay of Folkestone, Kent is ideal for fossil collectors, ammonite specialists, geology enthusiasts and anyone seeking a rare British marine fossil with strong natural history and display value.
