Description
Very Rare Deinekia romani Fossil Ammonite
This is a very rare Deinekia romani fossil ammonite from the Laevisicula Zone of the Bajocian stage, Middle Jurassic, collected from Beaminster in the United Kingdom. This carefully chosen fossil comes from the Alice Purnell Collection and is supplied with a Certificate of Authenticity lifetime guarantee generic card. The photograph shows the actual fossil specimen you will receive, allowing collectors to view the real preservation, shape, surface detail, colour, texture and natural character of the piece before purchase.
Full sizing can be seen in the photo. This is a desirable specimen for collectors of rare British ammonites, Jurassic fossils, Bajocian ammonites, Beaminster fossils, named species specimens and natural history display pieces.
Jurassic Geology and Age
Deinekia romani dates from the Bajocian stage of the Middle Jurassic, approximately 170 to 168 million years old. The specimen is from the Laevisicula Zone, an important ammonite biozone used in the dating and correlation of Bajocian marine rocks. Ammonite zones are valuable in geology because ammonites evolved rapidly and spread widely through ancient seas, allowing their fossils to act as natural time markers within the rock record.
During the Bajocian, the area now known as Beaminster was part of a warm marine environment. Ancient seas covered large areas of southern and southwest Britain, depositing muds, silts, limestones and other marine sediments across the seabed. These sediments preserved the remains of ammonites, belemnites, bivalves, brachiopods, crinoids, fish and other marine organisms, creating the fossil-rich Jurassic deposits valued by collectors today.
Fossil Type and Species
This specimen is an ammonite, an extinct marine cephalopod related to modern squid, cuttlefish and nautilus. Ammonites lived inside coiled, chambered shells. The living animal occupied the outer body chamber, while the earlier internal chambers helped control buoyancy, allowing the ammonite to move through the Jurassic water column.
Species: Deinekia romani
Genus: Deinekia
Order: Ammonitida
Class: Cephalopoda
Phylum: Mollusca
Deinekia romani is a highly collectable Middle Jurassic ammonite species, especially appealing because of its named identification, rare status and connection to the Laevisicula Zone. Ammonites from this interval are of strong palaeontological interest because they help record the development of Middle Jurassic marine faunas and the changing ammonite lineages of the Bajocian seas.
Morphology and Display Features
Deinekia romani displays the classic coiled shell form that makes ammonites among the most recognisable fossils in the world. The shell grew in a spiral, with each new whorl recording a later stage in the animal’s development. Features such as whorl shape, ribbing, shell curvature, ornamentation and overall symmetry are important in ammonite identification and give the fossil its strong display appeal.
Bajocian ammonites can show a wide range of shell forms, from compressed and finely ribbed types to more robust and ornamented examples. The visible structure of an ammonite shell represents both biological function and natural beauty, combining strength, buoyancy control and growth efficiency in a distinctive spiral form. This makes the fossil suitable for a display cabinet, educational collection, geological study set or decorative natural history display.
Beaminster British Fossil Locality
Beaminster is associated with the fossil-rich Jurassic geology of southwest England. Fossils from this region are valued because they represent the ancient marine environments that once covered Britain during the Middle Jurassic. A Beaminster ammonite with a specific Bajocian zone attribution has additional collector appeal, especially for those interested in British stratigraphy, ammonite evolution and classic UK fossil localities.
The sediments that preserved this fossil were originally deposited on an ancient seabed. After death, ammonite shells could become buried by sediment, protected from destruction and gradually fossilised through compaction and mineralisation over millions of years. The result is a genuine natural record of marine life from the Jurassic Period.
Authenticity and Collection Provenance
This very rare Deinekia romani ammonite is a genuine fossil specimen from the Alice Purnell Collection and includes a Certificate of Authenticity lifetime guarantee generic card. The fossil has been carefully selected as a quality collector’s piece, and the photograph 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 features are normal characteristics of authentic fossils and form part of the specimen’s individual geological history. This Laevisicula Zone Bajocian ammonite from Beaminster is ideal for collectors seeking a rare British Jurassic fossil with named species identification, strong scientific interest and excellent natural history display value.
