RARE Fossil Ammonite Ochetoceras densicostatum – Middle Oxfordian Jurassic – Le Vanneau, France – Genuine Specimen

Description RARE Fossil Ammonite – Ochetoceras densicostatum Middle Oxfordian, Jurassic Location: Le Vanneau, Deux-Sèvres, France All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity This is a beautifully preserved fossil ammonite specimen of the rare species Ochetoceras densicostatum, originating from the Middle Oxfordian stage of the Jurassic Period, around 160 million years ago. It was collected from the renowned fossil locality of Le Vanneau, in the Deux-Sèvres department of western France. The fossil shown in the listing photo is the exact piece you will receive, professionally selected for its quality, preservation, and scientific interest. Geological Context: Geological Period: Jurassic Stage: Middle Oxfordian Depositional Environment: Shallow marine basin Stratigraphy: Often associated with marly limestone and clay facies of the Oxfordian marine platform deposits. Fossil Information: Genus: Ochetoceras Species: Ochetoceras densicostatum Family: Oppeliidae Superfamily: Haploceratoidea Order: Ammonitida Morphological Features: Ochetoceras species are known for their compressed, planispiral shells with sharp ribbing. O. densicostatum is distinguished by its densely ribbed shell with bifurcating ribs that may show faint keel development along the venter. Scientific Significance: This genus represents a classic example of the evolutionary radiation of Oppeliid ammonites during the Middle Jurassic. Specimens like this are used for zonal biostratigraphy in Oxfordian sequences. Scale: Scale rule squares/cube = 1cm. Please refer to the photos for full sizing and detailed views. This is a carefully selected fossil specimen with great display value and scientific relevance, ideal for both collectors and educational use. A fantastic addition to any Jurassic ammonite or European fossil collection.