Rare Fossil Ammonite Pseudogrammoceras mulleri | Jurassic Aalenian Aveyron France | Genuine COA

Description Offered here is a rare and scientifically important fossil ammonite, Pseudogrammoceras mulleri, from the Aalenian Stage of the Jurassic Period, found in Aveyron, France. This specimen has been carefully selected and the photo shows the exact item you will receive. Scale cubes represent 1cm — please refer to the photograph for full sizing. This is a stunning example for any collector or academic interested in early Middle Jurassic ammonites. All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.   Geological & Scientific Details: Fossil Type: Ammonite (typically preserved as a coiled, planispiral shell) Species: Pseudogrammoceras mulleri Order: Ammonitida Superfamily: Hildoceratoidea Family: Graphoceratidae Geological Stage: Aalenian (approx. 174.1 – 170.3 million years ago) Period: Jurassic Locality: Aveyron, Occitanie region, southern France Depositional Environment: Shallow marine basin with fine-grained, carbonate-rich sedimentation typical of early Middle Jurassic environments in southern Europe   Morphology & Features: Involute shell with well-defined growth lines and ribbing Flanks are gently convex, leading to a moderately rounded venter Ribs may bifurcate and show slight curvature, indicative of this genus The suture line, if visible, displays typical lobes of the Graphoceratidae Compact form makes it ideal for display or comparative studies   Scientific Significance: Pseudogrammoceras mulleri is an important ammonite species for Aalenian biostratigraphy, helping to define biozones within the early Middle Jurassic. Its limited geographical and stratigraphic range makes it a valuable index fossil. First described by paleontologists studying the classic Jurassic successions of France and Germany, it continues to inform geological correlation studies across Europe. Specimens like this one contribute to understanding ammonite diversity and evolutionary development after the Toarcian turnover event.   Ideal For: Advanced collectors of ammonites and Jurassic material Educational use in geology or paleontology Academic reference in biostratigraphy or ammonite taxonomy   Included With Purchase: The exact Pseudogrammoceras mulleri fossil shown Certificate of Authenticity Secure and protective packaging   Please feel free to get in touch with any questions — we’re happy to help with further details or fossil identification guidance.