Rare baculites fossil ammonite – kossmatia tenuistriata, upper valanginian, cretaceous, italy – genuine specimen with coa

Description This is a rare Kossmatia tenuistriata fossil ammonite, dating back to the Upper Valanginian stage of the Early Cretaceous period (~137-133 million years ago), discovered in Italy. Kossmatia belongs to the Baculitidae family, a group of straight-shelled ammonites that adapted to open marine environments. Unlike coiled ammonites, Kossmatia evolved an elongated, uncoiled shell, which likely provided unique buoyancy adaptations for navigating the ancient seas. Fossils from the Valanginian stage are relatively rare, representing an important period of ammonite diversification. This well-preserved specimen is highly sought after by collectors and researchers for its scientific significance and rarity. Geological Information: Formation: Cretaceous Marine Deposits Stage: Upper Valanginian (~137-133 million years old) Location: Italy Depositional Environment: Shallow marine seafloor with fine sediment accumulation Fossil Characteristics: Straight-shelled ammonite with detailed suture patterns Well-preserved structure showcasing natural growth features Rare Early Cretaceous specimen from Italy Highly collectible and scientifically valuable fossil Key Features: Authentic Kossmatia tenuistriata fossil ammonite Rare and well-preserved specimen from the Early Cretaceous From the Alice Purnell Collection 100% genuine specimen with Certificate of Authenticity Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing. All fossils are securely packaged for worldwide shipping.