{"product_id":"declivilithus-titan-cyclopyge-sibilla-trilobite-fossils-in-matrix-upper-ordovician-ktaoua-formation-mecissi-morocco","title":"Declivilithus titan \u0026 Cyclopyge sibilla Trilobite Fossils in Matrix – Upper Ordovician | Ktaoua Formation, Mecissi, Morocco","description":"\u003cp\u003eA spectacular association of two trilobite species — \u003cem\u003eDeclivilithus titan\u003c\/em\u003e and \u003cem\u003eCyclopyge sibilla\u003c\/em\u003e — preserved together in natural matrix from the lower Ktaoua Formation, Mecissi, Morocco. These specimens date to the Upper Ordovician (Katian Stage), approximately \u003cstrong\u003e445–450 million years old\u003c\/strong\u003e, from one of the world's most celebrated trilobite fossil localities.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eDeclivilithus titan\u003c\/em\u003e is a large and imposing asaphid trilobite, prized by collectors for its impressive size and robust form. \u003cem\u003eCyclopyge sibilla\u003c\/em\u003e is a remarkable pelagic trilobite instantly recognisable by its enormously enlarged eyes — an adaptation for life in the low-light conditions of deeper water. Together on a single matrix piece, these two species represent both benthic and pelagic Ordovician marine ecosystems in a single stunning display.\u003c\/p\u003e\u003cp\u003eMecissi is renowned among trilobite collectors worldwide for producing exceptional Upper Ordovician material, and the lower Ktaoua Formation is particularly noted for its diversity and quality of preservation. A truly impressive and scientifically significant specimen.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecies:\u003c\/strong\u003e \u003cem\u003eDeclivilithus titan\u003c\/em\u003e \u0026amp; \u003cem\u003eCyclopyge sibilla\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePresentation:\u003c\/strong\u003e Association in natural matrix\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAge:\u003c\/strong\u003e Upper Ordovician, Katian Stage (~445–450 million years old)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormation:\u003c\/strong\u003e Lower Ktaoua Formation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocality:\u003c\/strong\u003e Mecissi, Morocco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Fossil, natural preservation in matrix\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MILBO LAGS Jewellery and Gems and Fossils","offers":[{"title":"Default Title","offer_id":53066790895936,"sku":"53066790895936","price":540.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/4238\/5472\/files\/20260825_194432.jpg?v=1787651681","url":"https:\/\/milbolags.myshopify.com\/products\/declivilithus-titan-cyclopyge-sibilla-trilobite-fossils-in-matrix-upper-ordovician-ktaoua-formation-mecissi-morocco","provider":"MILBO LAGS Jewellery and Gems and Fossils","version":"1.0","type":"link"}