Rare 4″ Leopoldia leopoldina Fossil Ammonite – Hauterivian, Cretaceous, Analava Madagascar – Genuine COA

Description A rare and beautifully preserved Leopoldia leopoldina Fossil Ammonite, measuring approximately 4 inches (10 cm), from the Hauterivian Stage of the Cretaceous Period, collected in Analava, Madagascar. This fossil is a striking example of a rare genus, showcasing elegant shell structure and excellent preservation. The specimen pictured is the exact one you will receive, supplied with a Certificate of Authenticity. Fossil Type & Species: Type: Ammonite (extinct marine cephalopod) Species: Leopoldia leopoldina Order: Ammonitida Superfamily: Perisphinctoidea (tentative placement) Family: Desmoceratidae (probable attribution) Geological Context: Period: Cretaceous Epoch/Stage: Lower Cretaceous – Hauterivian (approx. 132.9 to 129.4 million years ago) Biozone: Associated with Hauterivian ammonite faunas commonly used for stratigraphic correlation in Tethyan regions Depositional Environment: Marine shelf deposits, with alternating marls and limestones favourable to ammonite preservation Locality: Region: Analava, Madagascar Formation: Hauterivian marine deposits (specific stratigraphy not confirmed) Morphology & Features: Moderately evolute shell with wide umbilicus Fine ribbing along the flanks, occasionally bifurcating Rounded venter with continuous ribbing Symmetrical whorls showing characteristic features of the genus Leopoldia Scientific Notes: Leopoldia leopoldina was originally described by d’Orbigny in 1841, a pioneer in ammonite taxonomy This species is a biostratigraphically significant ammonite for correlating Hauterivian strata in Madagascar and beyond Notable Details: Excellent preservation with clear ribbing and shell form 100% natural specimen with no restoration Scale Reference: Each square or cube = 1cm. Please see the photo for accurate fossil dimensions Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. A Certificate of Authenticity is included with your purchase. The fossil shown is the exact specimen you will receive.   This Leopoldia leopoldina ammonite is a rare and scientifically important specimen, making it a superb addition to any fossil collection or natural history display.