Rare Fossil Ammonite Toricellites Jurassic Callovian Maud’s Heath Wiltshire UK | Authentic British Fossil

Description This listing presents a rare and scientifically notable fossil of Toricellites sp., an extinct genus of ammonite from the Callovian stage of the Middle Jurassic. This specimen was discovered at Maud’s Heath Causeway, Wiltshire, United Kingdom, a locality known for fossil-bearing Oxford Clay exposures. Geological Context: Fossil Type: Ammonite (Extinct marine cephalopod, related to squid and cuttlefish) Genus: Toricellites (originally described by de Grossouvre, 1901) Order: Ammonitida Superfamily: Stephanoceratoidea Family: Tulitidae Geological Stage: Callovian (c. 166.1 to 161.2 million years ago) Formation: Oxford Clay Formation Depositional Environment: Low-energy, offshore marine environment with fine clay sedimentation Ammonites of the genus Toricellites are uncommon in the UK fossil record and are especially significant in Callovian zonal biostratigraphy. Their ribbed, evolute shells serve as excellent index fossils and provide valuable insight into mid-Jurassic ammonite evolution. Morphology & Notable Features: Strongly ribbed, evolute shell with wide umbilicus Primary ribs bifurcating mid-flank and crossing the venter Rounded to slightly angular venter No keel; ribs remain continuous across shell Suture lines may be visible on well-preserved specimens Biozone Association: Toricellites species are typically found in the Athleta Zone of the Middle Callovian, widely used for biostratigraphic correlation in Europe, especially within the Oxford Clay of southern England. Specimen Details: Origin: Maud’s Heath Causeway, Wiltshire, United Kingdom Age: Callovian Stage, Middle Jurassic (~163 million years old) Scale: Scale rule square/cube = 1cm. See photo for full measurements Condition: Carefully chosen for preservation, morphology, and completeness Photo: The fossil you see in the listing is the exact specimen you will receive Certification & Authenticity: All of our fossils are 100% genuine and come with a Certificate of Authenticity. Each fossil is professionally verified and selected for its scientific and collector value. This rare Toricellites ammonite from Wiltshire’s historic Jurassic clay beds is a unique and valuable addition to any fossil collection or natural history display—perfect for collectors, educators, or palaeontology enthusiasts.