Rare Barremites difficilis Ammonite Fossil from Barremian Cretaceous Barret le Haut Provence France Authentic Specimen

Description

Geological Context and Provenance

This rare specimen is a genuine Barremites difficilis ammonite fossil from the Barremian Stage of the Early Cretaceous Period, approximately 129 – 125 million years ago. It was discovered at Barret le Haut, Provence, France, a locality renowned for producing scientifically important ammonites and other marine fossils from the Lower Cretaceous. The region lies within the broader geological setting of the Tethyan seaway, a warm marine corridor that connected vast shallow seas and played a central role in marine evolution during the Early Cretaceous.

The Barremian is particularly significant because it not only provides its name to the genus Barremites, but it also marks a period of rapid diversification among ammonites. Fossils from Barret le Haut are especially valued for their preservation and for their role in refining the zonal stratigraphy of the Lower Cretaceous across Europe.

Fossil Type and Species Information

Barremites difficilis is an ammonite of the Order Ammonitida, Superfamily Desmoceratoidea, and Family Desmoceratidae. The genus Barremites is emblematic of the Barremian Stage and provides essential markers for palaeontological correlation. Its very name derives from the Barremian itself, underlining its importance as an index fossil.

The species difficilis is recognised for its compact, involute shell and strong ribbing, features that provide both visual distinction and scientific utility. Its role in biozonation allows geologists and palaeontologists to accurately date and correlate Barremian deposits, making it indispensable in stratigraphic studies.

Morphological Features and Identification

This specimen of Barremites difficilis exhibits the hallmark ribbing that crosses the flanks and continues across the venter. The whorls are tightly coiled, producing a robust and elegant form typical of the genus. The ribs are straight and evenly spaced, giving the ammonite a bold, structural appearance.

These features not only strengthen the shell but also add to the aesthetic appeal of the fossil. Functionally, the ribbing provided reinforcement against water pressure and potential predation, while the chambered shell structure allowed the animal to maintain buoyancy and mobility within the water column.

Depositional Environment

During the Early Cretaceous, the Provence region was submerged beneath shallow seas connected to the Tethys Ocean. The marine environment was dominated by limestone and marl deposition, which created ideal conditions for preserving ammonite shells. These seas were rich with life, including ammonites, belemnites, bivalves, gastropods, and larger marine reptiles.

Barremites difficilis thrived in these waters as an active nektonic predator, feeding on smaller invertebrates. Its presence in the fossil record reflects both the ecological diversity and the evolutionary success of ammonites during the Barremian. The fine sedimentary conditions at Barret le Haut allowed for detailed preservation, ensuring that features such as ribbing and coiling remain visible millions of years later.

Collector Appeal and Authenticity

This Barremites difficilis ammonite is a scientifically significant and visually appealing fossil from one of France’s most important Lower Cretaceous localities. Its ribbing and coiling make it a classic display piece, while its provenance adds exceptional value to any collection.

• 100% Genuine Specimen – All fossils we offer are authentic and supplied with a Certificate of Authenticity.
• Exact Fossil Shown – The photographs provided show the actual ammonite you will receive.
• Scale Reference – Scale rule squares / cube = 1 cm. Please see images for accurate sizing.

This carefully selected ammonite connects directly to the Barremian seas of southern France. As both a scientifically important reference fossil and a striking collector’s piece, it offers a unique opportunity to own a tangible part of Earth’s Early Cretaceous history.