Rare Subastieria sulcosa Fossil Ammonite, Lower Hauterivian, Cretaceous, Thorne 06, France – Genuine Fossil with COA

Description This Rare Subastieria sulcosa Fossil Ammonite is a highly desirable specimen from the Lower Hauterivian stage of the Cretaceous period, discovered in Thorne 06, France. The fossil is a 100% genuine specimen, accompanied by a Certificate of Authenticity. The Subastieria sulcosa ammonite is prized for its smooth spiral shape and fine preservation, making it an excellent addition to any fossil collection. Geology and Fossil Type Geological Stage: Lower Hauterivian, Cretaceous Depositional Environment: Marine (During the Lower Hauterivian period, the oceans were warm and shallow, providing an ideal environment for ammonites like Subastieria sulcosa to thrive in regions such as Thorne 06, France.) Family: Turrilitidae (A family of ammonites known for their distinct spiral shells, often exhibiting fine ribbing or ornamentation) Superfamily: Ammonoidea Order: Ammonitida (Ammonites belong to the Cephalopoda class, related to modern squid and octopus) Morphology Features The Subastieria sulcosa ammonite features a tight, smooth spiral shell, with a subtle ribbing that adds texture to the surface. The distinct spiral shape is characteristic of the species, with the well-defined curvature of the shell being one of its most prominent features. The suture lines within the ammonite’s shell provide insight into the internal structure, revealing the ammonite’s buoyancy adaptation and ability to navigate ancient marine environments. Notable Features This ammonite is especially notable for its excellent preservation and rare occurrence. The Subastieria sulcosa species is not frequently found, making it a highly sought-after piece. The smooth spiral shape, combined with the well-preserved suture lines and subtle ribbing, makes it an exceptional example of Cretaceous ammonites. The fossil offers a rare opportunity to study the features of a marine species from the Lower Hauterivian period. Size and Presentation Scale Cube: 1cm Full sizing is provided in the photos, so you can see the exact size of the ammonite. Actual Fossil: The fossil pictured is the exact piece you will receive. Key Selling Points 100% Genuine Fossil Comes with a Certificate of Authenticity A rare Subastieria sulcosa ammonite from the Lower Hauterivian, Cretaceous period Smooth spiral shape, well-defined ribbing, and internal suture lines Perfect for collectors and those interested in Cretaceous ammonites and marine fossils This Rare Subastieria sulcosa Fossil Ammonite from Thorne 06, France is a stunning specimen from the Lower Hauterivian stage of the Cretaceous period. Its smooth spiral shell, fine preservation, and subtle ribbing make it a valuable addition to any fossil collection, particularly for those with an interest in Cretaceous ammonites and marine life.