{"product_id":"pyritized-crinoid-crown-fossil-specimen-ohio-usa","title":"Pyritized Crinoid Crown - Fossil Specimen","description":"\u003cp\u003e\u003cb\u003eLocality\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e: Silica Shale, Sylvania area, Lucas County, Ohio, U.S.A.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eEra\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e:\u003cspan\u003e Paleozoic\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: Middle Devonian, Givetian, approximately 387.9–382.3 mya\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe Silica Shale is a Middle Devonian rock unit of soft grey shale and shaly limestone, exposed in quarries in northwestern Ohio, southern Michigan and northeastern Indiana. It was laid down in a shallow tropical sea, and Grace Anne Stewart first documented its rock layers and fossils in 1927.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eTens of thousands of people have collected fossils from the Silica Formation since quarrying began at Silica, Ohio, in the 1920s. Its trilobites, brachiopods, corals, crinoids and other fossils are often partly preserved in pyrite, and X-ray scanning has shown that the pyrite copied even some internal soft tissues, making the shale a site of exceptional preservation.\u003c\/p\u003e\n\u003cp\u003eThis one of a kind pyrite crinoid crown fossil specimen is a large gray matrix plate preserving multiple crown sections with long, curved arms spread across the surface. The fossilized crowns stand out clearly against the lighter stone, with dark pyritized arm segments and raised cup-like centers giving the piece a layered, sculptural look. It has a strong display presence because the crowns are still easy to read, and the natural breaks and cracks in the matrix add to the fossil’s original, unpolished character.\u003c\/p\u003e\n\u003cp data-start=\"1612\" data-end=\"2151\"\u003eLucas County is one of the best-known American localities for pyritized Devonian fossils from the Silica Formation, and crinoids are among its classic finds. Crinoids are marine echinoderms related to sea stars and sea urchins, and the crown is the feeding part of the animal, made up of many branching arms that once filtered food from seawater. In this specimen, those arm structures were preserved through pyritization, which is why the fossil has such strong contrast and detail in the crown area. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2153\" data-end=\"2442\"\u003eMany people are drawn to crinoid fossils for what they represent: endurance, structure, and the quiet persistence of life through deep time. A piece like this often appeals to those who like fossils that feel ancient, grounded, and steady, with a natural sense of order preserved in stone.\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\u003ci\u003eWith this product, you will get the actual stone in the photograph. We do what we can to buy good quality products and price them honestly. The rocks may differ from the photos, but we hope we do them justice.\u003c\/i\u003e\u003c\/p\u003e","brand":"Ohio, U.S.A.","offers":[{"title":"Default Title","offer_id":48225525465258,"sku":null,"price":565.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/7158\/3658\/files\/PyriteCrinoidCrown-5651.jpg?v=1776472960","url":"https:\/\/rubblerockandgem.com\/de\/products\/pyritized-crinoid-crown-fossil-specimen-ohio-usa","provider":"Rubble Rock And Gem","version":"1.0","type":"link"}