Description
Pararnioceras alcinoeforme Ammonite Fossil
This Pararnioceras alcinoeforme ammonite is a genuine Jurassic fossil from the Black Ven Marls of the Lower Lias, collected from Black Ven, Lyme Regis, Dorset, UK. It is a carefully chosen specimen with excellent natural history appeal, classic Jurassic Coast provenance, and strong collector interest. The photograph shows the actual fossil you will receive, allowing you to view the real preservation, shell detail, surface texture, colour, and overall character of the specimen before purchase. For full sizing, please see the photo.
This fossil includes a fully hand-signed Premium Certificate of Authenticity, making it a desirable piece for collectors of British fossils, Jurassic ammonites, Lyme Regis fossils, and genuine natural history specimens.
Fossil Species and Ammonite Type
Pararnioceras alcinoeforme is an ammonite from the Lower Jurassic, belonging to the extinct group of shelled marine cephalopods related to modern squid, cuttlefish, and nautilus. Ammonites lived in prehistoric seas and are among the most important and 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 column.
Pararnioceras ammonites are known for their elegant coiled form and fine Jurassic shell ornament. The shell is typically planispiral, meaning it coils in a single flat plane, with visible whorls and ribbing that give the fossil its distinctive ammonite appearance. Specimens such as this are valued by collectors because they combine scientific interest, attractive natural form, and strong locality provenance from one of Britain’s most famous fossil coastlines.
Black Ven Marls and Lower Lias Geology
This specimen comes from the Black Ven Marls, part of the Lower Lias succession exposed around Lyme Regis and Charmouth on the Dorset coast. These fossil-rich marine deposits were formed during the Early Jurassic, when southern Britain was covered by a warm sea filled with ammonites, belemnites, bivalves, crinoids, fish, marine reptiles, and many other organisms.
The Black Ven area is particularly well known for its landslips, clay-rich sediments, and fossil-bearing layers. The marls and associated mudstones represent ancient sea-floor deposits where shells and organic remains were buried in fine sediment. Over millions of years, these remains were compacted, mineralised, and preserved as fossils. Ammonites from these beds are especially important because they help represent the detailed succession of Early Jurassic marine life preserved along the Dorset coast.
Jurassic Coast, Black Ven and Lyme Regis Provenance
Black Ven, near Lyme Regis, is one of the most famous fossil-collecting areas on the Jurassic Coast. Lyme Regis itself has a long and celebrated history in palaeontology, with its cliffs and foreshore producing ammonites, belemnites, marine reptile remains, fossil fish, shells, and other important specimens for generations. The wider Jurassic Coast is internationally recognised for its outstanding geology and fossil record.
A Pararnioceras alcinoeforme ammonite from Black Ven carries strong locality appeal. Fossils from this area are highly collectable because they come from classic British Lower Jurassic strata and are closely associated with the historic fossil heritage of Lyme Regis. This makes the specimen suitable not only as an attractive display fossil, but also as a meaningful piece of geological history from one of the world’s best-known fossil coastlines.
Collector Quality and Display Appeal
This ammonite is ideal for a fossil cabinet, educational collection, natural history display, study collection, office display, or as a special gift for a fossil enthusiast. Its species identification, Lower Lias age, Black Ven Marls geology, and Lyme Regis provenance give it strong appeal for collectors of Jurassic Coast fossils and British ammonites.
The specimen is sold as a genuine fossil, not a replica or cast. The actual item shown in the photo is the fossil you will receive, so you can buy with confidence. With its Pararnioceras alcinoeforme identification, Black Ven locality, Lower Lias Jurassic age, carefully chosen quality, and fully hand-signed Premium Certificate of Authenticity, this is a desirable fossil for any collection focused on ammonites, Dorset fossils, Jurassic marine life, or classic UK palaeontology.
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