RARE Lobolytoceras siemansi Fossil Ammonite Jurassic Toarcian Dorset UK Genuine Specimen

Description

Rare Lobolytoceras siemansi Fossil Ammonite from Dorset, UK

Presented here is a rare and genuine Lobolytoceras siemansi Fossil Ammonite, discovered in the world-famous Jurassic Coast of Dorset, England. This specimen dates to the Toarcian stage of the Early Jurassic period, making it an authentic piece of Earth’s geological past that has survived for nearly 180 million years. With its distinctive coiling and well-preserved features, this ammonite is a highly desirable collector’s specimen and a fascinating glimpse into the prehistoric seas of Britain.

Every specimen is carefully selected for quality, and the photographs provided show the actual fossil you will receive. The scale cube included in the images is marked in 1 cm squares for accurate size reference. This ammonite is guaranteed 100% authentic and comes complete with a Certificate of Authenticity.

Geological Context and Provenance

This ammonite originates from the Toarcian stage of the Lower Jurassic, approximately 182 – 174 million years ago. The Dorset coastline, now a UNESCO World Heritage Site, is one of the most celebrated fossil localities in the world. Known as the Jurassic Coast, it has yielded countless ammonites that have helped paleontologists refine the geological timescale and understand Jurassic marine life in exceptional detail.

Lobolytoceras siemansi is typically associated with the upper Toarcian beds, formed in shallow marine depositional environments where fine sediments preserved marine organisms in remarkable detail. The fossil-bearing strata of Dorset provide an exceptional window into these ecosystems, capturing ammonites and other marine life that thrived in warm Jurassic seas.

Scientific Classification and Identification

This specimen is identified as Lobolytoceras siemansi, belonging to the family Lytoceratidae, within the order Ammonitida and the superfamily Lytoceratoidea. The Lytoceratidae are a distinctive group of ammonites recognised for their evolute shells and elaborate suture lines. Lobolytoceras, in particular, is a rare genus within this family, and the species siemansi is noted for its unusual shell form and distinctive coiling.

Ammonites such as this serve as important index fossils, allowing geologists to date rock layers and correlate strata across different regions. The identification of Lobolytoceras siemansi in Dorset deposits provides valuable biostratigraphic evidence for the Toarcian stage.

Morphology and Distinctive Features

The shell morphology of Lobolytoceras siemansi is highly distinctive, characterised by evolute whorls with complex suture patterns. The sutures, consisting of deeply indented lobes and saddles, are among the defining features of this ammonite and contribute to its scientific and aesthetic appeal. The ornamentation and shell architecture indicate adaptations for buoyancy and stability, suggesting that Lobolytoceras was a strong swimmer, inhabiting open marine environments.

The rarity of this species in the fossil record adds to its collectible value, as relatively few well-preserved specimens are available compared to more common Jurassic ammonites.

Scientific and Collectible Significance

Fossils of Lobolytoceras siemansi are considered rare and are highly sought after by collectors and researchers alike. Their presence in Dorset’s Jurassic Coast highlights the global importance of this region for paleontology. Owning such a fossil is not only acquiring a natural work of art but also a scientifically significant specimen that played a role in refining our understanding of Jurassic marine life.

Key Features of This Fossil

• Rare Lobolytoceras siemansi ammonite from Dorset, England
• Jurassic (Toarcian stage), approx. 182 – 174 million years old
• From the world-famous Jurassic Coast, a UNESCO World Heritage Site
• Member of the Lytoceratidae family, with distinctive coiling and sutures
• Supplied with a Certificate of Authenticity
• The exact specimen pictured is the one you will receive

This rare Lobolytoceras siemansi ammonite fossil represents an extraordinary opportunity to own a genuine piece of Dorset’s Jurassic heritage. With its rarity, scientific importance, and visual beauty, it makes an exceptional addition to any fossil collection.