RARE Hypoturrilites tuberculatum Heteromorph Ammonite Fossil | Lower Cenomanian Cretaceous | Isle of Wight UK | Certified

Description A stunning and rare heteromorph ammonite fossil: Hypoturrilites tuberculatum from the Lower Cenomanian, Cretaceous Period, discovered at St. Catherine’s Point, Isle of Wight, United Kingdom. This unusual ammonite exhibits the uncoiled shell morphology characteristic of heteromorphs and is a sought-after collector’s specimen due to its scarcity, scientific interest, and dramatic form. You will receive the exact fossil shown in the photos. A scale cube (1cm) is included for accurate sizing. Please refer to all images for full detail. Geological & Scientific Details: Fossil Type: Heteromorph Ammonite Species: Hypoturrilites tuberculatum Geological Period: Cretaceous Stage: Lower Cenomanian (~100.5 – 98 million years ago) Locality: St. Catherine’s Point, Isle of Wight, UK Biozone (if applicable): Mantelliceras mantelli Zone (approximate placement) Depositional Environment: Marine sedimentary basin — chalk marl and greensand formations typical of the southern UK Order: Ammonitida Superfamily: Turrilitoidea Family: Turrilitidae Formally Described By: Spath, 1924 Morphological Features: Dramatic heteromorph shell form — high-spired, uncoiled whorls arranged helically Distinctive tuberculate ornamentation with nodes or spines along the ribbing Irregular coiling adds uniqueness to each specimen Represents evolutionary experimentation in ammonoid morphology Displays suture patterns consistent with advanced ammonites Scientific & Collector Relevance: Hypoturrilites tuberculatum is a notable heteromorph ammonite, part of a group that deviated from the typical spiral form, potentially due to ecological niche adaptation Rarely found in complete or semi-complete condition Important in studies of mid-Cretaceous cephalopod evolution and paleobiogeography Highly desirable among collectors of Isle of Wight fossils and Cretaceous heteromorphs Why This Fossil is Special: Rare species from a classic UK locality Uncommon morphology makes this a standout display piece Ethically sourced and expertly prepared Guaranteed 100% genuine, backed with a Certificate of Authenticity A striking piece of natural history — ideal for collectors, educators, or museum-style displays