Tiltoniceras costatum Fossil Ammonite Whitby Jurassic UK Genuine Specimen Certificate Authenticity Upper Toarcian Collector Display
£ 24.00
Tiltoniceras costatum Fossil Ammonite – Upper Toarcian, Whitby Jurassic CoastThis exceptional fossil ammonite, identified as Tiltoniceras costatum,
originates from the world-famous Upper Toarcian deposits of Whitby, North Yorkshire, United Kingdom. Dating to approximately 180 million years ago during the Early Jurassic period, this specimen represents a striking and well-preserved example of classic British ammonite fauna from one of the most significant fossil localities in Europe.Discovered by our dedicated team members, Alister and Alison, this ammonite has been carefully cleaned, expertly prepared, and treated by Alison to reveal its natural detail while preserving its structural integrity. The fossil shown in the photographs is the exact specimen you will receive, ensuring a unique and highly collectible addition to your collection.Geological Context and StratigraphyWhitby’s Jurassic coastline is renowned for its Lias Group deposits, particularly the fossil-rich shales and mudstones of the Upper Toarcian stage. These sediments were laid down in a relatively deep marine basin where fine particles accumulated slowly over time. Periods of reduced oxygen on the sea floor played a key role in preserving marine organisms with exceptional clarity.Ammonites such as Tiltoniceras costatum are important index fossils within these sequences, helping to define and correlate specific biozones across the Jurassic. Their rapid evolutionary changes make them invaluable for understanding geological time and marine biodiversity during this period.Taxonomy and ClassificationTiltoniceras costatum belongs to the order Ammonitida and is typically placed within the superfamily Hildoceratoidea, a group known for its diverse shell forms and evolutionary significance during the Early Jurassic. These cephalopods were highly mobile marine predators, closely related to modern squid and octopus.The genus Tiltoniceras is recognised for its distinctive ribbing and robust shell structure, making it a desirable and identifiable ammonite among collectors and palaeontologists.Morphology and Shell FeaturesThis specimen displays the classic planispiral coiling characteristic of ammonites, with clearly defined whorls and a balanced overall structure. The species name costatum refers to its pronounced ribbing, which is a key identifying feature.The ribs are typically strong and evenly spaced, extending across the flanks and often becoming more pronounced toward the outer shell margin. This ribbing not only adds to the fossil’s visual appeal but also reflects the structural adaptations of the living animal.A defined keel may be present along the venter, contributing to hydrodynamic efficiency in life. Fine growth lines can also be observed, offering insight into the incremental development of the shell over time.Natural mineralisation enhances the contrast of the fossil, highlighting the ribbing and overall form, making it an excellent display specimen.Depositional Environment and PreservationDuring the Toarcian stage, the Whitby region was covered by a marine basin where calm conditions allowed for the steady accumulation of fine sediments. These conditions, combined with periodic low oxygen levels, created an ideal environment for fossil preservation.Alison’s careful preparation has exposed the ammonite’s features while retaining elements of the surrounding matrix for context. The result is a well-defined and visually striking specimen that maintains its natural authenticity.Full sizing details can be confirmed via the accompanying photographs.Authenticity and ProvenanceThis fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee card, providing complete confidence in its origin and identification. Every fossil we offer is responsibly sourced and handled directly by our team, ensuring full traceability from discovery through to preparation.Collector Appeal and Display ValueWhitby ammonites are among the most sought-after fossils globally, prized for their preservation, beauty, and scientific importance. This Tiltoniceras costatum specimen stands out due to its strong ribbing and excellent condition, making it a desirable addition to any collection.Ideal for collectors of Jurassic fossils, ammonites, or British geological specimens, this piece offers both educational value and striking visual appeal. Whether displayed in a cabinet, study, or gallery, it provides a tangible connection to the ancient seas that once covered the United Kingdom.
originates from the world-famous Upper Toarcian deposits of Whitby, North Yorkshire, United Kingdom. Dating to approximately 180 million years ago during the Early Jurassic period, this specimen represents a striking and well-preserved example of classic British ammonite fauna from one of the most significant fossil localities in Europe.Discovered by our dedicated team members, Alister and Alison, this ammonite has been carefully cleaned, expertly prepared, and treated by Alison to reveal its natural detail while preserving its structural integrity. The fossil shown in the photographs is the exact specimen you will receive, ensuring a unique and highly collectible addition to your collection.Geological Context and StratigraphyWhitby’s Jurassic coastline is renowned for its Lias Group deposits, particularly the fossil-rich shales and mudstones of the Upper Toarcian stage. These sediments were laid down in a relatively deep marine basin where fine particles accumulated slowly over time. Periods of reduced oxygen on the sea floor played a key role in preserving marine organisms with exceptional clarity.Ammonites such as Tiltoniceras costatum are important index fossils within these sequences, helping to define and correlate specific biozones across the Jurassic. Their rapid evolutionary changes make them invaluable for understanding geological time and marine biodiversity during this period.Taxonomy and ClassificationTiltoniceras costatum belongs to the order Ammonitida and is typically placed within the superfamily Hildoceratoidea, a group known for its diverse shell forms and evolutionary significance during the Early Jurassic. These cephalopods were highly mobile marine predators, closely related to modern squid and octopus.The genus Tiltoniceras is recognised for its distinctive ribbing and robust shell structure, making it a desirable and identifiable ammonite among collectors and palaeontologists.Morphology and Shell FeaturesThis specimen displays the classic planispiral coiling characteristic of ammonites, with clearly defined whorls and a balanced overall structure. The species name costatum refers to its pronounced ribbing, which is a key identifying feature.The ribs are typically strong and evenly spaced, extending across the flanks and often becoming more pronounced toward the outer shell margin. This ribbing not only adds to the fossil’s visual appeal but also reflects the structural adaptations of the living animal.A defined keel may be present along the venter, contributing to hydrodynamic efficiency in life. Fine growth lines can also be observed, offering insight into the incremental development of the shell over time.Natural mineralisation enhances the contrast of the fossil, highlighting the ribbing and overall form, making it an excellent display specimen.Depositional Environment and PreservationDuring the Toarcian stage, the Whitby region was covered by a marine basin where calm conditions allowed for the steady accumulation of fine sediments. These conditions, combined with periodic low oxygen levels, created an ideal environment for fossil preservation.Alison’s careful preparation has exposed the ammonite’s features while retaining elements of the surrounding matrix for context. The result is a well-defined and visually striking specimen that maintains its natural authenticity.Full sizing details can be confirmed via the accompanying photographs.Authenticity and ProvenanceThis fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee card, providing complete confidence in its origin and identification. Every fossil we offer is responsibly sourced and handled directly by our team, ensuring full traceability from discovery through to preparation.Collector Appeal and Display ValueWhitby ammonites are among the most sought-after fossils globally, prized for their preservation, beauty, and scientific importance. This Tiltoniceras costatum specimen stands out due to its strong ribbing and excellent condition, making it a desirable addition to any collection.Ideal for collectors of Jurassic fossils, ammonites, or British geological specimens, this piece offers both educational value and striking visual appeal. Whether displayed in a cabinet, study, or gallery, it provides a tangible connection to the ancient seas that once covered the United Kingdom.
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