Rare Leptechioceras subplicatum Ammonite Fossil Jurassic Radstock UK Genuine Authentic COA

Description

Authentic Jurassic Fossil from Radstock, UK

This rare Leptechioceras subplicatum ammonite fossil is a genuine specimen from the Upper Sinemurian stage of the Early Jurassic, discovered in Radstock, Somerset, United Kingdom. Carefully selected for both its scientific importance and striking preservation, it offers a remarkable glimpse into the evolution of ammonites nearly 195 million years ago. The photographs show the actual specimen you will receive, with a 1 cm scale cube included for accurate sizing. Every fossil comes with a Certificate of Authenticity, guaranteeing its provenance and genuineness.

Geological Age and Provenance

The fossil originates from the Upper Sinemurian stage of the Lower Jurassic, approximately 197–190 million years ago. At that time, Radstock and much of Somerset lay beneath shallow, warm epicontinental seas. These marine environments were ideal for ammonites and other invertebrates, providing abundant nutrients and conditions that led to rapid evolutionary diversification. The sediments deposited here formed the Lower Lias formations, which are world-renowned for their rich and well-preserved ammonite faunas.

Species Identification and Classification

Leptechioceras subplicatum belongs to the class Cephalopoda, order Ammonitida, and family Echioceratidae, within the superfamily Eoderoceratoidea. This genus is characterised by its compressed shells, fine ribbing, and elegant planispiral coiling. The specific epithet subplicatum highlights its subtle rib structures and ornamental variations. Ammonites of this type are essential to Sinemurian biostratigraphy, contributing to our understanding of early Jurassic faunal succession and evolutionary pathways.

Morphology and Distinctive Traits

This specimen displays the diagnostic features of Leptechioceras subplicatum, including a slender, compressed whorl section and finely ribbed ornamentation. The ribs are closely spaced and sweep symmetrically across the shell flanks, creating a delicate yet distinctive pattern. Its elegant spiral form and refined ribbing provide both scientific and aesthetic appeal. These morphological adaptations may have influenced buoyancy and swimming efficiency, helping the ammonite to thrive in its marine environment. Such clear and delicate ribbing makes this fossil especially prized among collectors.

Scientific and Stratigraphic Importance

Leptechioceras subplicatum is significant in paleontology as it is associated with the Upper Sinemurian ammonite zones, providing crucial data for the correlation of strata across Europe. Its presence within fossiliferous horizons of the Lower Lias makes it a valuable index fossil. Ammonites such as this one allow geologists to build an accurate geological timescale and reconstruct paleoenvironments of the Early Jurassic seas. For collectors, this means owning a scientifically important specimen that is both rare and beautiful.

Condition and Presentation

The fossil has been carefully prepared to reveal its natural features while maintaining structural integrity. The ribbing and spiral structure are well preserved, showcasing the refined ornamentation that defines this species. This is a genuine, one-of-a-kind fossil—not a replica or cast. The photographs provided are of the exact specimen you will receive, ensuring complete confidence in the authenticity and quality of your purchase.

Guarantee of Authenticity

All of our fossils are guaranteed 100% genuine, responsibly sourced, and scientifically identified. Each specimen comes with a Certificate of Authenticity to verify provenance. This rare Leptechioceras subplicatum ammonite fossil from Radstock is a scientifically valuable and visually appealing addition for fossil collectors, natural history enthusiasts, and educational collections.