Fossil Ammonite Peronoceras fibulatum Jurassic Whitby UK Genuine Specimen Certificate Authenticity Rare Yorkshire Collector Display
£ 252.00
Peronoceras fibulatum Fossil Ammonite – Upper Toarcian, Whitby Jurassic CoastThis exceptional fossil ammonite, identified as Peronoceras fibulatum,
originates from the famous Upper Toarcian deposits of Whitby, North Yorkshire, United Kingdom. Whitby is globally recognised for its rich Jurassic marine fossils, and this specimen represents a superb example from approximately 180 million years ago, during the Early Jurassic period.Discovered by our experienced team members, Alister and Alison, this ammonite has been expertly cleaned, prepared, and treated by Alison to reveal its natural beauty and structural detail. The fossil shown in the photographs is the exact specimen you will receive, making it a unique and highly desirable collector’s piece.Geological Context and StratigraphyThe Upper Toarcian stage is part of the Lower Jurassic Lias Group, a sequence of marine sediments deposited in a relatively deep, oxygen-variable sea. Whitby’s famous alum shales and associated layers are particularly known for their exceptional fossil preservation, often retaining fine details of marine organisms.Peronoceras fibulatum is associated with Toarcian ammonite biozones, which are widely used in stratigraphy due to their rapid evolution and broad geographic distribution. These ammonites serve as important index fossils, allowing geologists to precisely date the surrounding rock layers.Taxonomy and ClassificationPeronoceras fibulatum belongs to the order Ammonitida and is part of the superfamily Hildoceratoidea, a group known for its elegant, often finely ornamented shells. Members of this group were highly adapted marine cephalopods, related to modern squid and octopus, and were among the dominant predators of their time.The genus Peronoceras is particularly noted for its distinctive ribbing and graceful shell form, making it a favourite among collectors and palaeontologists alike.Morphology and Shell CharacteristicsThis specimen displays classic ammonite morphology with a tightly coiled, planispiral shell and well-defined whorls. The ribbing on Peronoceras fibulatum is typically fine to moderately pronounced, often forming elegant patterns across the flanks and extending toward the outer shell margin.The fossil shows clear structural detail, including growth lines and subtle ornamentation that reflect the organism’s development through life. The overall symmetry and preservation enhance its visual appeal, while also providing valuable insight into the biology of Jurassic ammonites.The natural mineralisation present within the fossil highlights its features and adds contrast, making the ribbing and coiling stand out beautifully against the matrix.Depositional Environment and PreservationDuring the Toarcian, the Whitby region was covered by a marine basin where fine sediments settled on the sea floor. Periods of low oxygen conditions contributed to the exceptional preservation of organic material, allowing ammonites like Peronoceras fibulatum to fossilise with remarkable detail.Alison’s careful preparation has exposed the ammonite clearly while preserving its natural integrity. The fossil retains its authentic character, with a balance of cleaned surfaces and natural matrix that enhances both its scientific and display value.Full sizing details can be viewed in the accompanying photographs, allowing you to appreciate the scale and proportions of this specimen.Authenticity and ProvenanceThis fossil is 100% genuine and includes a fully hand-signed Premium Certificate of Authenticity, guaranteeing its origin and identification. Each specimen we offer is responsibly sourced and handled directly by our team, ensuring complete transparency from discovery to final presentation.Collector Appeal and Display QualityWhitby ammonites are among the most sought-after fossils in the world, prized for their beauty, historical significance, and excellent preservation. This Peronoceras fibulatum specimen is an outstanding example, combining scientific importance with striking visual appeal.Ideal for collectors of Jurassic fossils, ammonites, or British geological specimens, this piece makes a superb addition to any collection. Whether displayed in a cabinet, office, or study, it serves as a captivating reminder of the ancient seas that once covered the UK.
originates from the famous Upper Toarcian deposits of Whitby, North Yorkshire, United Kingdom. Whitby is globally recognised for its rich Jurassic marine fossils, and this specimen represents a superb example from approximately 180 million years ago, during the Early Jurassic period.Discovered by our experienced team members, Alister and Alison, this ammonite has been expertly cleaned, prepared, and treated by Alison to reveal its natural beauty and structural detail. The fossil shown in the photographs is the exact specimen you will receive, making it a unique and highly desirable collector’s piece.Geological Context and StratigraphyThe Upper Toarcian stage is part of the Lower Jurassic Lias Group, a sequence of marine sediments deposited in a relatively deep, oxygen-variable sea. Whitby’s famous alum shales and associated layers are particularly known for their exceptional fossil preservation, often retaining fine details of marine organisms.Peronoceras fibulatum is associated with Toarcian ammonite biozones, which are widely used in stratigraphy due to their rapid evolution and broad geographic distribution. These ammonites serve as important index fossils, allowing geologists to precisely date the surrounding rock layers.Taxonomy and ClassificationPeronoceras fibulatum belongs to the order Ammonitida and is part of the superfamily Hildoceratoidea, a group known for its elegant, often finely ornamented shells. Members of this group were highly adapted marine cephalopods, related to modern squid and octopus, and were among the dominant predators of their time.The genus Peronoceras is particularly noted for its distinctive ribbing and graceful shell form, making it a favourite among collectors and palaeontologists alike.Morphology and Shell CharacteristicsThis specimen displays classic ammonite morphology with a tightly coiled, planispiral shell and well-defined whorls. The ribbing on Peronoceras fibulatum is typically fine to moderately pronounced, often forming elegant patterns across the flanks and extending toward the outer shell margin.The fossil shows clear structural detail, including growth lines and subtle ornamentation that reflect the organism’s development through life. The overall symmetry and preservation enhance its visual appeal, while also providing valuable insight into the biology of Jurassic ammonites.The natural mineralisation present within the fossil highlights its features and adds contrast, making the ribbing and coiling stand out beautifully against the matrix.Depositional Environment and PreservationDuring the Toarcian, the Whitby region was covered by a marine basin where fine sediments settled on the sea floor. Periods of low oxygen conditions contributed to the exceptional preservation of organic material, allowing ammonites like Peronoceras fibulatum to fossilise with remarkable detail.Alison’s careful preparation has exposed the ammonite clearly while preserving its natural integrity. The fossil retains its authentic character, with a balance of cleaned surfaces and natural matrix that enhances both its scientific and display value.Full sizing details can be viewed in the accompanying photographs, allowing you to appreciate the scale and proportions of this specimen.Authenticity and ProvenanceThis fossil is 100% genuine and includes a fully hand-signed Premium Certificate of Authenticity, guaranteeing its origin and identification. Each specimen we offer is responsibly sourced and handled directly by our team, ensuring complete transparency from discovery to final presentation.Collector Appeal and Display QualityWhitby ammonites are among the most sought-after fossils in the world, prized for their beauty, historical significance, and excellent preservation. This Peronoceras fibulatum specimen is an outstanding example, combining scientific importance with striking visual appeal.Ideal for collectors of Jurassic fossils, ammonites, or British geological specimens, this piece makes a superb addition to any collection. Whether displayed in a cabinet, office, or study, it serves as a captivating reminder of the ancient seas that once covered the UK.
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