Description This listing features a rare and spectacular 8-inch iridescent ammonite fossil of Cleoniceras besairiei, a member of the family Perisphinctidae. Originating from Tulear, Madagascar, this striking specimen is from the Oxfordian Stage of the Late Jurassic Period. Its remarkable size and natural mother-of-pearl iridescence make it a centrepiece for any fossil collection. Cleoniceras ammonites are known for their evolute shell form, strong ribbing, and complex suture patterns. This specimen has been expertly cut and polished to reveal the internal structure and shimmering nacre layers, making it both a scientifically valuable and visually stunning display fossil. Geological & Scientific Details: Species: Cleoniceras besairiei Family: Perisphinctidae Superfamily: Perisphinctoidea Order: Ammonitida Geological Period: Jurassic Geological Stage: Oxfordian Location: Tulear, Madagascar Depositional Environment: Marine shelf – warm, shallow tropical sea with carbonate sedimentation Morphology Features: Large, discoidal shell; strong, regularly spaced ribbing; iridescent shell preservation; complex suture lines Why This Specimen Stands Out: Rare 8-inch large specimen of Cleoniceras besairiei Beautiful natural iridescence – colours shimmer under light Cut and polished to reveal internal features Professionally sourced and authenticated The photo shows the actual specimen you will receive Supplied with a Certificate of Authenticity Scale Reference: Scale Rule Squares / Cube = 1cm – Please refer to the photo for full sizing. Shipping & Packaging: Secure, professional packaging Tracked shipping available worldwide An exceptional fossil ammonite that combines both scientific interest and aesthetic beauty – a museum-quality specimen for discerning collectors. All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
