Perisphinctes cowleyensis Fossil Ammonite – Oxfordian Jurassic – Normandy France – Genuine Specimen with Certificate

Description Offered here is a beautiful and authentic Perisphinctes cowleyensis fossil ammonite from the Oxfordian Stage of the Jurassic Period, collected in Normandy, France. This well-preserved specimen is a stunning representation of the Perisphinctidae family, with fine ribbing and classic coiled shell morphology. Fossil Type: Ammonite (extinct marine mollusc) Species: Perisphinctes cowleyensis Geological Period: Jurassic Geological Stage: Oxfordian (~163.5 to 157.3 million years ago) Location: Normandy, France Scientific & Geological Information: Order: Ammonitida Superfamily: Perisphinctoidea Family: Perisphinctidae Morphology Features: Moderately involute to evolute shell with visible inner whorls Characteristic fine and regular bifurcating ribbing pattern Broad umbilicus and well-defined ventral keel Gently curved ribs suggest adaptation to moderate water depths Depositional Environment: Deposited in a shallow epicontinental sea during a warm marine phase Marine limestone and marl sequences in Normandy preserve diverse faunas Biozone: Associated with mid to upper Oxfordian ammonite zones Notable: A classic ammonite species frequently used in biostratigraphy across Western Europe Frequently found in fossiliferous exposures along the French coast Identification History: Originally described in 19th-century paleontological works focusing on British and French Jurassic strata Why This Fossil is Exceptional: This ammonite displays the hallmark ribbing and preservation quality that makes Perisphinctes cowleyensis a favourite among collectors and educators alike Its stratigraphic position within the Oxfordian makes it scientifically valuable for correlation and paleoenvironmental studies Ideal for fossil collectors, educational purposes, or as a unique natural history display Additional Details: All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity Scale Rule Squares / Cube = 1cm: Full sizing please see photo The fossil you see in the photo is the exact specimen you will receive Professionally selected and curated by our expert team