Gravesia Fossil Ammonite – Upper Tithonian Stage, Cretaceous – Lorraine, France – Alice Purnell Collection – 100% Genuine with Certificate

Description This listing features an authentic Gravesia fossil ammonite from the Upper Tithonian stage, dating to the transition between the Late Jurassic and Early Cretaceous, approximately 150–145 million years ago. This specimen was discovered in Lorraine, France, a region celebrated for its fossil-rich sedimentary formations. It comes from the Alice Purnell Collection, which is known for its high-quality, well-documented fossil specimens. Gravesia is a genus of extinct ammonite molluscs known for their elegant, compressed shells and fine ribbing. These cephalopods thrived in shallow marine environments, and their evolutionary lineage makes them important biostratigraphic markers, especially around the Jurassic-Cretaceous boundary. The specimen here offers a fine example of Gravesia shell morphology and preservation. Geological Context: The Upper Tithonian Stage is the final stage of the Jurassic, closely approaching the Jurassic-Cretaceous boundary. The Lorraine region, located in northeastern France, was covered by warm epicontinental seas during this time, allowing for the exceptional preservation of marine fauna. Ammonites like Gravesia are used by geologists and palaeontologists to help date and correlate rock layers across Europe. Key Details: Species: Gravesia (Ammonite) Fossil Type: Extinct marine cephalopod Age: Upper Tithonian Stage (~150–145 million years ago) Geological Period: Late Jurassic transitioning into Early Cretaceous Location Found: Lorraine, France Provenance: From the Alice Purnell Collection Condition: Well-preserved ammonite with detailed ribbing Authenticity: 100% genuine fossil, supplied with a Certificate of Authenticity Scale: See photo with 1cm scale cube for accurate sizing Photo: The exact specimen shown is the one you will receive Scientific & Display Value: Gravesia is highly valued among ammonite collectors and researchers for its biostratigraphic significance and visual appeal. The combination of its elegant form and fine ribbing make this a striking addition to any fossil collection. Its provenance from the Alice Purnell Collection adds historical and academic value to the specimen. All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity. Fast & Secure Shipping – Expertly packed and shipped promptly. Add a scientifically valuable and beautifully preserved ammonite to your collection with this authentic Gravesia fossil from the Upper Tithonian of Lorraine, France.