Description
Rare Darellia politica Fossil Ammonite
This is a genuine Darellia politica fossil ammonite from the Bajocian stage of the Jurassic Period, collected from Beaminster in the United Kingdom. This carefully chosen specimen is an attractive British Jurassic ammonite and a desirable piece for fossil collectors, geology enthusiasts, natural history displays and anyone interested in classic marine fossils from the Dorset and southwest England region.
The photograph shows the actual fossil specimen you will receive, so you can clearly view its preservation, form, surface detail, colour and natural character before purchase. Full sizing can be seen in the photo. This fossil is supplied with a Certificate of Authenticity lifetime guarantee generic card, confirming that it is a genuine fossil specimen.
Jurassic Geology and Age
This ammonite dates from the Bajocian stage of the Middle Jurassic, approximately 170 to 168 million years old. During the Bajocian, the area now known as southern and southwest England was covered by warm Jurassic seas. Marine sediments accumulated across ancient seabeds, preserving the remains of ammonites, belemnites, bivalves, brachiopods, crinoids, marine reptiles and other prehistoric life.
The Beaminster area is part of a region with a rich Jurassic geological heritage. Sedimentary rocks in this part of the United Kingdom record changing sea levels, ancient marine environments and the diverse faunas that lived in Jurassic seas. Fossils from these deposits are popular with collectors because they combine scientific interest, British locality appeal and strong display value.
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 chambers helped regulate buoyancy, allowing it to move through the water column in ancient seas.
Species: Darellia politica
Genus: Darellia
Order: Ammonitida
Class: Cephalopoda
Phylum: Mollusca
Darellia politica is a Middle Jurassic ammonite species with an appealing coiled shell form. Ammonites of this age are important in palaeontology because they evolved rapidly and are widely used as index fossils for dating and correlating Jurassic marine rocks. Their shell shape, ribbing, whorl profile and ornamentation help identify different species and understand evolutionary changes through time.
Morphology and Natural Features
This Darellia politica ammonite displays the classic spiral form that makes ammonites among the most recognisable fossils in the world. The shell grew by adding new material around the outer whorl, creating a natural coiled structure that records the growth of the animal through life. Features such as the whorl shape, ribbing, shell curvature and overall symmetry are key characteristics used in ammonite study and add strong visual appeal for display.
The fossil may show natural mineralisation, surface texture, matrix, colour variation, small cracks, preparation marks or age-related wear. These are normal features of genuine fossils and form part of the specimen’s geological history. Each ammonite is unique, shaped by its original biology, burial conditions and millions of years of fossilisation.
Beaminster British Fossil Locality
Beaminster, in the United Kingdom, lies within a region known for Jurassic marine fossil deposits. Fossils from this area are valued by collectors because they represent the ancient seas that once covered parts of Britain during the Jurassic Period. A British ammonite from Beaminster offers both scientific and locality interest, making it suitable for specialist fossil collections as well as decorative natural history displays.
The marine sediments of the region preserve evidence of ancient seabed environments where ammonite shells could be buried after death. Over geological time, these remains became fossilised within the surrounding rock, preserving the spiral shell form for millions of years.
Authenticity and Collector Appeal
This Darellia politica ammonite is a carefully chosen genuine fossil specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The photo shows the exact fossil supplied, giving buyers confidence that the specimen pictured is the one they will receive.
This fossil is ideal for collectors of British fossils, Jurassic ammonites, Beaminster fossils, Bajocian marine fossils and natural history specimens. Its Middle Jurassic age, classic ammonite form, named species identification and UK locality make it an attractive addition to a fossil cabinet, educational collection, geology display or display shelf.
