Large Fossil Gastropod Bathrotomaria reticulata – Jurassic Kimmeridge Clay – Dorset, UK – Genuine Specimen

Description Authentic Bathrotomaria reticulata Fossil Gastropod – Jurassic Period – Kimmeridge Clay – Blackhead, Dorset, UK This striking and large gastropod fossil is a genuine specimen of Bathrotomaria reticulata, a marine snail from the Upper Jurassic. It originates from the Kimmeridge Clay Formation, specifically collected at Blackhead, Dorset, a renowned fossil locality along England’s Jurassic Coast. Fossil and Geological Details: Species: Bathrotomaria reticulata Family: Pleurotomariidae Superfamily: Pleurotomarioidea Order: Pleurotomariida Geological Stage: Kimmeridgian Stage, Late Jurassic (approximately 157–152 million years ago) Formation: Kimmeridge Clay Formation Location: Blackhead, Dorset, UK Depositional Environment: Deep marine basin environment with fine muds and clays, characteristic of low-oxygen conditions promoting excellent fossil preservation Morphological Features: Large, conical shell with a stepped spire Distinctive reticulate (net-like) ornamentation on the shell surface Slit-band feature common to the Pleurotomariidae family Notable: This specimen belongs to a group of primitive marine gastropods that are considered “living fossils” due to close resemblance to modern-day Pleurotomariidae Biozone: Kimmeridgian ammonite zones, likely falling within the Baylei or Pectinatus zones of the Dorset sequence Scientific Identification: Initially described under the genus Pleurotomaria, later revised to Bathrotomaria as taxonomic understanding improved Specimen Provenance: Discovered by: UKGE team members Alister and Alison Date of Discovery: 24 April 2024 Prepared by: Alison Scale Reference: 1cm scale cube shown in photos – refer to listing for accurate sizing Photo Accuracy: The image shows exactly the fossil you will receive Authenticity Guaranteed: Every specimen comes with a Certificate of Authenticity and is backed by our guarantee that it is 100% genuine About the Kimmeridge Clay: The Kimmeridge Clay is one of the most fossiliferous formations in the UK, particularly known for preserving diverse marine invertebrates, reptiles, and occasionally soft-bodied organisms. The environment represented a low-energy, anoxic seabed perfect for the exceptional preservation of marine life. This rare and sizable gastropod fossil makes a stunning addition to any collection—whether scientific, educational, or decorative.