Rare Torquatisphinctes madagascariensis Fossil Ammonite – Lower Kimmeridgian, Upper Jurassic, Madagascar – Genuine COA

Description A rare Torquatisphinctes madagascariensis Fossil Ammonite, from the Lower Kimmeridgian Stage of the Upper Jurassic, collected in Madagascar. This ammonite is an excellent representative of the genus Torquatisphinctes, recognised for its elegant ribbing, strong coiling, and significance within Kimmeridgian ammonite faunas. The specimen shown in the photographs is the exact one you will receive, and it is supplied with a Certificate of Authenticity. Fossil Type & Species: Type: Ammonite (extinct marine cephalopod) Species: Torquatisphinctes madagascariensis Order: Ammonitida Superfamily: Perisphinctoidea Family: Perisphinctidae Geological Context: Period: Jurassic Epoch/Stage: Upper Jurassic – Lower Kimmeridgian (approx. 157.3 to 155 million years ago) Biozone: Typically associated with Platynota Zone faunas, used for global correlation of the early Kimmeridgian Formation: Kimmeridgian marine limestones of Madagascar Depositional Environment: Marine carbonate shelf environment with fine-grained limestones and marls, producing excellent ammonite preservation Locality: Region: Madagascar Morphology & Features: Evolute shell with wide umbilicus Strong, dense ribbing that bifurcates on the flanks and extends across the venter Whorl section moderately compressed with graceful coiling Distinctive ribbing pattern characteristic of Torquatisphinctes madagascariensis Scientific Notes: The genus Torquatisphinctes is an important group within the Perisphinctidae, first recognised in the 19th century T. madagascariensis is a significant species in Madagascan ammonite faunas, aiding in regional and global biostratigraphic correlation Notable Details: Excellent preservation with strong ribbing and detailed shell ornamentation Rare Madagascan ammonite from a classic Kimmeridgian deposit 100% genuine, natural fossil – no restoration Scale Reference: Each square or cube in the photo = 1cm. Please check the images for accurate sizing Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Every purchase includes a Certificate of Authenticity. The fossil shown is the exact specimen you will receive.   This Torquatisphinctes madagascariensis ammonite is a rare and scientifically valuable fossil from the Lower Kimmeridgian of Madagascar – an excellent addition for collectors, researchers, or natural history displays.