Turrilites costatus Fossil Heteromorph Uncoiled Ammonite, Lower Cenomanian, Cretaceous, Sarthe, France – Genuine Fossil with COA

Description This Turrilites costatus Fossil Heteromorph Uncoiled Ammonite is a rare and well-preserved specimen from the Lower Cenomanian stage of the Cretaceous period, discovered in the Sarthe region of France. The fossil is a 100% genuine specimen, accompanied by a Certificate of Authenticity. The Turrilites costatus ammonite is a heteromorph ammonite, known for its uncoiled shell—a unique feature that sets it apart from most other ammonite species. This ammonite offers an intriguing glimpse into ancient marine life and is a highly sought-after find for fossil collectors and enthusiasts of Cretaceous ammonites. Geology and Fossil Type Geological Stage: Lower Cenomanian, Cretaceous Depositional Environment: Marine (During the Lower Cenomanian period, shallow, warm seas covered much of France, creating an ideal habitat for ammonites like Turrilites costatus to flourish. The fossil was preserved in these ancient seas, providing a rare window into the past marine environment of the Cretaceous period.) Family: Turrilitidae (A family of ammonites characterized by their uncoiled or partially coiled shells, including some species with strikingly unusual forms, such as Turrilites costatus.) Superfamily: Ammonoidea Order: Ammonitida (Ammonites, including Turrilites costatus, belong to the Cephalopoda class, closely related to modern squid and octopuses.) Morphology Features The Turrilites costatus ammonite is a heteromorph ammonite, which means it has a unique, uncoiled shape. This specimen’s irregular spiral is one of the key features that make it stand out among coiled ammonites. The ammonite exhibits a distinct, smooth shell, with well-preserved ornamentation, including fine ribbing along the shell. The fossil’s uncoiled structure gives it a fascinating and unusual appearance, adding to its value both scientifically and as a display piece. Notable Features This ammonite is notable for its heteromorph uncoiled structure, which is relatively rare in the fossil record. The Turrilites costatus species is a Cretaceous ammonite that showcases a distinct spiral without the usual coiling. The fine ribbing on the shell, as well as the clear internal suture lines, make this fossil a valuable specimen for collectors and fossil enthusiasts. The uncoiled nature of the shell is a key feature that makes Turrilites costatus an important example of ammonite evolution. 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 Turrilites costatus ammonite from the Lower Cenomanian, Cretaceous period Heteromorph uncoiled shell, fine ribbing, and well-preserved suture lines Perfect for collectors and those interested in Cretaceous ammonites and marine fossils This Turrilites costatus Fossil Heteromorph Uncoiled Ammonite from Sarthe, France is an exceptional specimen from the Lower Cenomanian stage of the Cretaceous period. Its uncoiled structure, fine ribbing, and well-preserved features make it a valuable addition to any fossil collection, especially for those with an interest in heteromorph ammonites and marine life from the Cretaceous period.