Strenoceras garentiana Ammonite Fossil Jurassic Bajocian Dorset UK Genuine Authentic COA

Description

Authentic Jurassic Fossil from Dorset, UK

This Strenoceras garentiana ammonite fossil is an exceptional and genuine specimen from the Middle Bajocian stage of the Jurassic Period, discovered at Burton Bradstock, Dorset, United Kingdom. Dorset is internationally renowned for its Jurassic Coast and fossil-rich inland exposures, which provide a unique record of life in the seas around 170 million years ago. The photographs show the exact specimen you will receive, and a 1 cm scale cube is included for reference. Every fossil comes with a Certificate of Authenticity, guaranteeing its provenance and 100% authenticity.

Geological Age and Provenance

The fossil originates from the Middle Bajocian stage of the Jurassic Period, dating to approximately 170–168 million years ago. At this time, the region that is now Dorset was submerged beneath shallow seas connected to the vast Tethys Ocean. These waters supported a diverse array of marine life, including ammonites, belemnites, brachiopods, and early marine reptiles. The fine-grained clays and limestones of Burton Bradstock provided excellent preservation conditions, capturing ammonites like Strenoceras garentiana in remarkable detail.

Species Identification and Classification

Strenoceras garentiana belongs to the class Cephalopoda, order Ammonitida, superfamily Stephanoceratoidea, and family Stephanoceratidae. This genus is one of the most important ammonites of the Bajocian stage and is widely used as a biostratigraphic marker in Jurassic geology. Its restricted stratigraphic range and distinctive morphology allow scientists to identify and correlate Middle Jurassic deposits across Europe with precision. For collectors, Strenoceras garentiana represents both an aesthetically striking fossil and a scientifically significant specimen.

Morphology and Distinctive Traits

This specimen shows the key features of Strenoceras garentiana. The shell is planispiral with strongly involute coiling, giving it a robust and compact form. Bold ribs radiate across the flanks, often bifurcating or trifurcating, and continue uninterrupted over the venter, creating an ornate and highly recognisable pattern. These ribs strengthened the shell against water pressure and predators while also adding to its hydrodynamic efficiency. The ribbing and symmetry are highly diagnostic, making this fossil an outstanding example of its species.

Scientific and Stratigraphic Importance

Strenoceras garentiana is a crucial index fossil for the Bajocian stage of the Middle Jurassic. Its presence defines key biozones that geologists use to construct the Jurassic timescale and correlate rock formations across wide geographic areas. As a result, it plays an essential role in refining our understanding of cephalopod evolution, Jurassic marine environments, and paleogeography. For collectors, it offers not only a tangible connection to ancient seas but also a fossil that has been vital to scientific research for more than a century.

Condition and Presentation

The fossil has been professionally prepared to bring out its natural detail, highlighting the ribbing and coiling that make Strenoceras garentiana so distinctive. Its features are well-preserved, with diagnostic ornamentation clearly visible. This is a unique specimen—never a cast or replica—and the photographs show the exact piece you will receive. Its excellent preservation ensures it is suitable for both private collectors and academic study, as well as display in educational or museum settings.

Guarantee of Authenticity

All of our fossils are 100% genuine, responsibly sourced, and scientifically identified. Each specimen is supplied with a Certificate of Authenticity. This Strenoceras garentiana ammonite fossil from Burton Bradstock, Dorset, is a rare and scientifically valuable example of Bajocian ammonites, making it a superb addition for collectors, natural history enthusiasts, and educational collections.