{"product_id":"sea-urchin-8-00","title":"Sea Urchin $8.00","description":"\u003cp data-start=\"70\" data-end=\"419\"\u003eThis sea urchin fossil preserves the hard, calcite skeleton of an echinoid, a marine invertebrate related to starfish and sand dollars. Fossils like this provide valuable insights into ancient marine environments and the evolutionary history of echinoderms, which have existed for over 450 million years.\u003c\/p\u003e\n\u003cp data-start=\"421\" data-end=\"430\"\u003eFeatures:\u003c\/p\u003e\n\u003cul data-start=\"432\" data-end=\"1124\"\u003e\n\u003cli data-start=\"432\" data-end=\"642\"\u003e\n\u003cp data-start=\"434\" data-end=\"642\"\u003eComposition: The fossilized test is primarily composed of calcite, a crystalline form of calcium carbonate (CaCO₃), which often preserves fine details of the sea urchin’s spiny surface and internal structure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"644\" data-end=\"799\"\u003e\n\u003cp data-start=\"646\" data-end=\"799\"\u003eGeological Significance: Sea urchin fossils are found in sedimentary rock layers worldwide and serve as important index fossils for dating marine strata.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"801\" data-end=\"950\"\u003e\n\u003cp data-start=\"803\" data-end=\"950\"\u003eFormation Process: The original skeleton was buried in sediment and gradually mineralized over millions of years, preserving its shape and texture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"952\" data-end=\"1124\"\u003e\n\u003cp data-start=\"954\" data-end=\"1124\"\u003eEducational Value: Ideal for studying paleontology, marine biology, and fossilization processes, this specimen provides a tangible connection to ancient ocean ecosystems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The Science Museum of Minnesota","offers":[{"title":"Default Title","offer_id":47750018138326,"sku":"R800","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/2491\/1830\/files\/71sHwljlNQL.jpg?v=1769021905","url":"https:\/\/threecrows.com.co\/products\/sea-urchin-8-00","provider":"ThreeCrowsLLP","version":"1.0","type":"link"}