LEIOCERAS OPALINUM Fossil Ammonite – Inferior Oolite, Jurassic Coast, Burton Bradstock, Dorset, UK

Description This listing showcases a striking specimen of Leioceras opalinum, a fossil ammonite sourced from the renowned Inferior Oolite of the Jurassic Coast, discovered at Burton Bradstock, Dorset, UK. This elegant fossil dates back to the Middle Jurassic period and represents a genus known for its compressed, discoidal shell and fine, evenly spaced ribs. Leioceras ammonites are an important biostratigraphic marker in the early Bajocian stage, and this particular specimen highlights the key morphological traits that make this genus easily identifiable and highly collectable. Geological Unit: Inferior Oolite Group Formation: Burton Bradstock Beds Geological Period: Middle Jurassic Stage: Early Bajocian Biozone: Leioceras opalinum Zone (defining species of the zone) Depositional Environment: Shallow marine carbonate platform Order: Ammonitida Superfamily: Hildoceratoidea Family: Graphoceratidae This fossil was discovered by our skilled team members, Alister and Alison, on 17 January 2025, during a dedicated fossil-hunting expedition along the Jurassic Coast. It has been professionally cleaned, stabilised, and prepared by Alison to best preserve its structure and details. The fossil is embedded in a naturally weathered limestone matrix and displays fine ribbing and distinct shell morphology. For full sizing, please refer to the included scale photo (scale cube = 1cm). The specimen shown is exactly the one you will receive. All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity. This piece is a must-have for serious collectors, educational institutions, or enthusiasts of Mesozoic marine life. A true glimpse into Earth’s ancient oceans from one of the UK’s most famous fossil-bearing regions.