{"product_id":"5-1-douvilleiceras-tractor-ammonite-fossil-cluster-on-stand-madagascar-jurassic-age-06jzz922","title":"5.1\" Douvilleiceras Tractor Ammonite Fossil Cluster on Stand Madagascar Jurassic Age","description":"\u003cp\u003eLocation: \u003cspan\u003eMahajanga Province,\u003c\/span\u003e Madagascar\u003c\/p\u003e\n\u003cp\u003eWeight: 6.5 Ounces (\u003cspan style=\"color: rgb(169, 92, 10);\"\u003e\u003cstrong\u003eWith Stand\u003c\/strong\u003e\u003c\/span\u003e)\u003c\/p\u003e\n\u003cp\u003eDimensions: 5.1 inches long, 2.3 inches wide, 2 inches thick (\u003cspan style=\"color: rgb(176, 95, 7);\"\u003e\u003cstrong\u003eMatrix w\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(169, 92, 10);\"\u003e\u003cstrong\u003eith Stand\u003c\/strong\u003e\u003c\/span\u003e)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #38761d;\"\u003eThe items pictured are the ones you will receive. \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cspan style=\"color: #b45f06;\"\u003e\u003cstrong\u003eDouvilleiceras Tractor Ammonite\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003eTractor Ammonite, scientifically known as Douvilleiceras, is a distinctive genus of extinct cephalopods belonging to the order Ammonitida, widely recognized for its robust, coarsely ribbed shell morphology that resembles a modern tractor tire. These fossils primarily date to the\u003cspan\u003e \u003c\/span\u003eMiddle to Late Cretaceous period, specifically thriving during the\u003cspan\u003e \u003c\/span\u003eAlbian stage\u003cspan\u003e \u003c\/span\u003eapproximately 115 to 100 million years ago. Specimens originating from the northwest coast of Madagascar, particularly the Mahajanga region, are exceptionally well-regarded by collectors and museums alike for their intricate preservation and unique decorative aesthetics.\u003c\/p\u003e\n\u003cp\u003eMorphologically,\u003cspan\u003e \u003c\/span\u003eDouvilleiceras\u003cspan\u003e \u003c\/span\u003especies feature prominent tubercles and heavy ribbing across their whorls, which account for their descriptive moniker. While exceptional specimens like those from Madagascar often measure substantial dimensions—such as weights exceeding 15 kilograms and diameters spanning nearly centimeters—other species like\u003cspan\u003e \u003c\/span\u003eDouvilleiceras inaequinodum\u003cspan\u003e \u003c\/span\u003etypically reach diameters of about 8 to 10 cm.\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1250\/0441\/files\/goniatite_ammonite_11zon.jpg?v=1753304837\" alt=\"2.7\u0026quot; Goniatite Ammonite Fossil Polished, Cut Half's Erfoud Morocco Devonian Age COA - Fossil Age Minerals\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e \u003c\/p\u003e","brand":"Seama 26","offers":[{"title":"Default Title","offer_id":52460588531992,"sku":"06JZZ922","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1250\/0441\/files\/5U8A0029.jpg?v=1785458755","url":"https:\/\/www.fossilageminerals.com\/products\/5-1-douvilleiceras-tractor-ammonite-fossil-cluster-on-stand-madagascar-jurassic-age-06jzz922","provider":"Fossil Age Minerals","version":"1.0","type":"link"}