Rare Paltechioceras auriolum Ammonite Fossil Jurassic Radstock UK Genuine Authentic COA

Description

Authentic Jurassic Fossil from Radstock, UK

This rare Paltechioceras auriolum ammonite fossil is a genuine specimen from the Upper Sinemurian stage of the Early Jurassic, collected in Radstock, Somerset, United Kingdom. A carefully chosen fossil, it shows the distinctive features of its species and offers both scientific significance and aesthetic appeal. The photographs provided show the exact specimen you will receive, with a 1 cm scale cube for accurate size reference. Every fossil is 100% genuine and is supplied with a Certificate of Authenticity for complete assurance.

Geological Age and Provenance

The fossil dates back to the Upper Sinemurian stage, approximately 197–190 million years ago. At this time, Radstock and much of Somerset were submerged beneath shallow seas that formed part of the northern margins of the Tethys Ocean. Sediments deposited here became part of the Lower Lias formations, some of the most fossiliferous deposits in Europe. The conditions were ideal for preserving ammonites, with fine-grained mudstones and silts capturing their shells in extraordinary detail. Fossils from this region are internationally renowned for their scientific value and clarity of preservation.

Species Identification and Classification

Paltechioceras auriolum belongs to the class Cephalopoda, order Ammonitida, superfamily Eoderoceratoidea, and family Echioceratidae. This genus is known for its small to medium-sized ammonites with compressed shells and fine ribbing. The species auriolum is scientifically important because it defines the Auriolum Subzone, a recognised subdivision of the raricostatum ammonite biozone. This makes it not only a striking fossil but also a crucial species for geologists studying Jurassic stratigraphy.

Morphology and Distinctive Traits

This specimen displays the classic features of Paltechioceras auriolum, including slender, planispiral whorls and fine, evenly spaced ribbing. The ribs sweep gracefully across the shell flanks, producing a delicate ornamentation that enhances its aesthetic beauty. The compressed form of the shell reflects adaptations for stability and buoyancy in the Jurassic seas. These traits also make auriolum easily identifiable and a favourite among collectors of Sinemurian ammonites. The fossil’s preserved detail provides insight into both the morphology and the evolutionary significance of this species.

Scientific and Stratigraphic Importance

Paltechioceras auriolum is highly significant in paleontology and stratigraphy, as it defines the Auriolum Subzone of the Upper Sinemurian. Ammonites such as this are key index fossils, meaning they are used by geologists to precisely date and correlate rock layers across Europe. Their presence provides a reliable reference point for reconstructing Jurassic paleoenvironments and for understanding the evolutionary progression of early ammonites. Collectors and researchers alike value fossils of this species for their role in refining the geological timescale and documenting marine life of the Early Jurassic.

Condition and Presentation

The fossil has been carefully prepared to preserve its natural features while enhancing visibility of its diagnostic traits. The ribbing, whorl development, and shell curvature are clearly displayed, making this an excellent reference specimen. It is a unique, one-of-a-kind fossil—not a reproduction or cast. The images provided show the actual ammonite you will receive, ensuring full transparency and confidence in your purchase.

Guarantee of Authenticity

All of our fossils are 100% genuine specimens, responsibly sourced and scientifically identified. Each fossil is accompanied by a Certificate of Authenticity to confirm its provenance. This rare Paltechioceras auriolum ammonite fossil from Radstock is an outstanding piece of Jurassic natural history, making it an excellent addition for collectors, educators, and enthusiasts alike.