Mercaticeras rursicostatum Ammonite Fossil Lower Toarcian Jurassic Italy Genuine Certified

Description

Genuine Mercaticeras rursicostatum Ammonite Fossil from Italy

This listing features a beautifully preserved Mercaticeras rursicostatum ammonite fossil from the Lower Toarcian stage of the Jurassic period, discovered in Italy. This genuine fossil showcases the natural artistry of ammonite shells, with ribbing and curvature that reflect the evolutionary adaptations of these marine cephalopods. Each piece is carefully chosen to highlight its unique features and comes with a Certificate of Authenticity, guaranteeing its provenance. The photographs show the exact fossil you will receive, with a 1cm scale cube included for accurate size reference.

Geological Context and Age

The fossil dates back to the Lower Toarcian stage of the Early Jurassic, around 182 million years ago. At this time, much of what is now Italy was submerged beneath shallow epicontinental seas that supported thriving marine ecosystems. These seas were rich in ammonites, belemnites, and marine reptiles, and their sediments preserved countless examples of life from this interval.

The Lower Toarcian period is particularly notable for the Toarcian Oceanic Anoxic Event, a time of significant climatic and environmental change that reshaped marine life. Fossils from this interval, such as Mercaticeras, provide valuable scientific insights into how species adapted and evolved under shifting environmental conditions.

Species Characteristics and Morphology

The genus Mercaticeras belongs to the family Hildoceratidae, within the superfamily Hildoceratoidea, order Ammonitida. The species Mercaticeras rursicostatum is well known for its distinctive ribbed shell structure. Its morphology is characterised by finely ribbed, moderately compressed whorls, with ribbing that sweeps gently across the flanks and often bifurcates, creating a graceful yet striking pattern.

This particular style of ribbing made Mercaticeras both visually recognisable and scientifically significant, as variations in rib structure are essential for distinguishing species and establishing detailed biostratigraphic frameworks. The shell’s design also reflects its functional role: like other ammonites, the chambered structure allowed for buoyancy regulation, enabling the creature to move effectively through the ancient seas.

Scientific Importance and Stratigraphy

Mercaticeras rursicostatum is considered an important index fossil for the Lower Toarcian stage. Its well-documented evolutionary progression, combined with its wide geographic distribution, makes it invaluable for correlating Jurassic rock layers across Europe and beyond. Paleontologists use specimens like this to refine biozones and to reconstruct ancient marine environments.

Fossils from Italy are especially sought after for their excellent preservation and their connection to some of the most studied Jurassic stratigraphic sequences. They hold both scientific and historical value, making them highly desirable for collectors, researchers, and enthusiasts of natural history.

Provenance and Authenticity

This ammonite was found in Italy, a region renowned for its Jurassic marine fossil sites. Each specimen has been carefully selected for its scientific integrity and display quality. The fossil comes with a Certificate of Authenticity, ensuring its identification as a genuine Mercaticeras rursicostatum ammonite fossil.

Ideal for Collectors, Education, and Display

This Mercaticeras ammonite fossil is an exceptional specimen for anyone interested in paleontology, geology, or natural history. Collectors will appreciate its scientific significance and beauty, while educators and students can use it as a valuable teaching tool to understand Jurassic marine ecosystems. Displaying this fossil not only highlights its aesthetic qualities but also connects you to a world that existed over 180 million years ago.

This Lower Toarcian ammonite fossil from Italy represents a remarkable blend of natural beauty and scientific value, offering both a stunning display piece and a genuine piece of Earth’s deep history.