{"product_id":"fossil-fish-knightia-eocene-epoch-green-river-formation-wyoming-c-50-million-years-old","title":"Fossil Fish – Knightia – Eocene Epoch – Green River Formation, Wyoming – c.50 Million Years Old","description":"\u003cp\u003eA genuine and beautifully preserved fossil fish, Knightia sp., from the world-famous Green River Formation of Wyoming, USA. Dating to the Eocene epoch approximately 50 million years ago, this extinct genus of herring-like fish is one of the most commonly found vertebrate fossils in North America — yet each specimen is a genuinely thrilling object, a perfect snapshot of ancient life locked in stone.\u003cbr\u003eThis example is preserved in a pale cream limestone\/shale matrix, with the full body of the fish clearly visible — spine, ribs, fins, scales and skull all beautifully defined in warm rust-brown mineral tones. The detail is exceptional, with the dorsal and pectoral fins, lateral line and individual vertebrae all clearly discernible.\u003cbr\u003eThe Green River Formation was once a vast network of subtropical freshwater lakes, and the fine-grained sediment that settled at its bottom created ideal conditions for extraordinary fossil preservation. Knightia specimens from this deposit are collected legally and have been traded internationally for decades.\u003cbr\u003eA wonderful natural history piece — ideal as a display object, educational specimen, or an unusual and genuinely ancient gift.\u003cbr\u003e • Species: Knightia sp. (extinct Eocene herring-like fish)\u003cbr\u003e • Age: Approximately 50 million years (Eocene epoch)\u003cbr\u003e • Origin: Green River Formation, Wyoming, USA\u003cbr\u003e • Matrix: Limestone\/shale\u003cbr\u003e • Condition: Well preserved, excellent detail throughout\u003c\/p\u003e","brand":"windsorvintage","offers":[{"title":"Default Title","offer_id":57780336198006,"sku":null,"price":30.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/2834\/5765\/files\/4C3A0644-9888-487C-B00C-567E8BAC9809.jpg?v=1777553879","url":"https:\/\/windsor-vintage.co.uk\/products\/fossil-fish-knightia-eocene-epoch-green-river-formation-wyoming-c-50-million-years-old","provider":"windsorvintage","version":"1.0","type":"link"}