Rare 4.5″ Kepplerites gowerianus Fossil Ammonite, Jurassic, Lower Callovian, Waterpark UK, Genuine with COA

Description Available here is a Rare 4.5″ Fossil Ammonite of Kepplerites gowerianus from the Lower Callovian Stage of the Jurassic Period, discovered at Waterpark, Ashton Keynes, Wiltshire, United Kingdom — a locality renowned for exceptional marine fossil preservation. This carefully selected specimen is 100% genuine and comes with a Certificate of Authenticity. You will receive the exact fossil shown in the photo. Scale Rule Squares / Cube = 1cm — see photo for precise dimensions.   Key Geological and Scientific Information: Species: Kepplerites gowerianus Fossil Type: Ammonite (extinct marine cephalopod) Geological Period: Jurassic Geological Stage: Lower Callovian (~164 million years ago) Biozone: Kepplerites gowerianus Zone (index species for the basal Callovian) Location: Waterpark, Ashton Keynes, Wiltshire, England, UK Formation: Likely from the Kellaways Beds Order: Ammonitida Superfamily: Stephanoceratoidea Family: Kosmoceratidae Described By: J. de C. Sowerby, 1836   Morphology Features: Kepplerites gowerianus displays a moderately involute shell with well-defined bifurcating ribbing extending across the flanks and a gently rounded venter. The shell is more robust than some related species, with a slightly expanded umbilicus and prominent ribbing patterns. These features help distinguish it as a zone-defining ammonite of the Lower Callovian.   Depositional Environment: The specimen likely originated from the Kellaways Beds, formed in a low-energy, offshore marine environment. These fine-grained silts and clays provided ideal conditions for preserving ammonite shells in remarkable detail.   Stratigraphic and Scientific Importance: Kepplerites gowerianus is the index fossil for the base of the Callovian Stage, making it a crucial marker in Jurassic biostratigraphy. Its global significance allows paleontologists to correlate rock layers across Europe and beyond. Specimens like this contribute to understanding evolutionary lineages within the Kosmoceratidae.   Authenticity Guarantee: All of our fossils are 100% genuine specimens, carefully prepared and professionally handled. Each fossil includes a Certificate of Authenticity verifying its identity and origin.   This Kepplerites gowerianus ammonite is a rare and scientifically significant addition to any fossil collection, display case, or educational resource focused on Jurassic paleontology.