{"product_id":"dalmanites-limulurus-trilobite-fossil-lower-silurian-rochester-shale-middleport-new-york-usa","title":"Dalmanites limulurus Trilobite Fossil – Lower Silurian | Rochester Shale, Middleport, New York, USA","description":"\u003cp\u003eA classic fossil trilobite, \u003cem\u003eDalmanites limulurus\u003c\/em\u003e, from the lower Silurian Rochester Shale at Caleb's Quarry, Middleport, New York, USA. This specimen dates to approximately \u003cstrong\u003e425 million years ago\u003c\/strong\u003e, from one of the most historically significant and celebrated trilobite localities in North America.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eDalmanites limulurus\u003c\/em\u003e is among the most iconic of all Silurian trilobites, instantly recognisable by its distinctive schizochroal eyes, pointed pygidium (tail spine), and beautifully sculpted carapace. The Rochester Shale of western New York has been producing exceptional trilobite specimens for over 150 years and remains a benchmark locality for collectors and palaeontologists worldwide.\u003c\/p\u003e\u003cp\u003eCaleb's Quarry at Middleport is particularly renowned for yielding well-preserved, three-dimensionally intact specimens — a product of the fine-grained shale depositional environment of the ancient Silurian sea. Material from this specific locality is highly regarded and increasingly difficult to source.\u003c\/p\u003e\u003cp\u003eA cornerstone specimen for any serious trilobite or Palaeozoic fossil collection.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecies:\u003c\/strong\u003e \u003cem\u003eDalmanites limulurus\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAge:\u003c\/strong\u003e Lower Silurian (~425 million years old)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Rochester Shale\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocality:\u003c\/strong\u003e Caleb's Quarry, Middleport, New York, USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Fossil, natural preservation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MILBO LAGS Jewellery and Gems and Fossils","offers":[{"title":"Default Title","offer_id":53066811179328,"sku":"53066811179328","price":390.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/4238\/5472\/files\/20260825_193829.jpg?v=1787652936","url":"https:\/\/milbolags.myshopify.com\/products\/dalmanites-limulurus-trilobite-fossil-lower-silurian-rochester-shale-middleport-new-york-usa","provider":"MILBO LAGS Jewellery and Gems and Fossils","version":"1.0","type":"link"}