{"product_id":"perisphinctes-ammonite-fossil","title":"Perisphinctes Ammonite - Fossil","description":"\u003cp\u003e\u003cb\u003eMined from\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e: Aarau, Switzerland\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eEra\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e:\u003cspan\u003e Oxfordian\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cb\u003eGeological Age\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e: Approximately 160 to 157 mya\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e:\u003cstrong\u003e \u003c\/strong\u003eThis \u003cstrong data-start=\"240\" data-end=\"273\"\u003ePerisphinctes ammonite fossil\u003c\/strong\u003e from \u003cstrong data-start=\"279\" data-end=\"301\"\u003eAarau, Switzerland\u003c\/strong\u003e is a coiled relic of ancient seas, dating back to the \u003cstrong data-start=\"356\" data-end=\"403\"\u003eOxfordian Stage of the Late Jurassic Period\u003c\/strong\u003e—approximately \u003cstrong data-start=\"418\" data-end=\"450\"\u003e160 to 157 million years ago\u003c\/strong\u003e. These extinct marine mollusks, part of the cephalopod family, once thrived in the warm, shallow seas that covered much of Europe during the Mesozoic Era. Characterized by their tightly ribbed, planispiral shells, \u003cem data-start=\"665\" data-end=\"680\"\u003ePerisphinctes\u003c\/em\u003e species are prized by collectors and paleontologists alike for their beautifully symmetrical forms and intricate suture patterns, which speak to the evolutionary artistry of Jurassic life.\u003c\/p\u003e\n\u003cp data-start=\"871\" data-end=\"1435\" class=\"\"\u003eThe fossil beds near Aarau yield particularly well-preserved specimens, often still embedded in fine-grained limestone matrices that formed in a stable, low-energy marine environment. Unlike more common ammonites from Madagascar or Morocco, Swiss \u003cem data-start=\"1118\" data-end=\"1133\"\u003ePerisphinctes\u003c\/em\u003e fossils are rarer on the market and offer a glimpse into the ancient ecosystems of what was once the northern margin of the Tethys Ocean. These specimens are not only aesthetically striking but also scientifically significant—markers of biostratigraphic zones used to date other rock layers worldwide.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eApproximate Size of 1 piece\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e: 6.5cm x 5.5cm x 2cm\u003cbr\u003e\u003cstrong\u003eApproximate Weight of 1 piece\u003c\/strong\u003e: 116g\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e: 1pc\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003ci\u003eWe do our best to buy quality products- although not every rock is the same. If you choose to purchase the \"staff pick option\", we will select the best of the batch for you. Otherwise, it will be at random from the larger batch we have in stock.\u003c\/i\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Switzerland","offers":[{"title":"Standard","offer_id":46716780150954,"sku":"","price":115.0,"currency_code":"CAD","in_stock":true},{"title":"Staff Pick","offer_id":46716780183722,"sku":"","price":130.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/7158\/3658\/files\/PerisphinctesAmmonite-Fossil-Switzerland-8.jpg?v=1779137576","url":"https:\/\/rubblerockandgem.com\/es\/products\/perisphinctes-ammonite-fossil","provider":"Rubble Rock And Gem","version":"1.0","type":"link"}