RARE 6.5" Quenstedtoceras lamberti Fossil Ammonite | Upper Callovian Jurassic | Gristhorpe Yorkshire UK | Certified Authentic Specimen
£ 120.00
A superb and rare 6.5-inch fossil ammonite: Quenstedtoceras lamberti from the
Upper Callovian Stage of the Jurassic Period, discovered in the classic Jurassic marine beds of Gristhorpe, Yorkshire, United Kingdom. This finely preserved specimen offers a beautifully detailed example of one of the most iconic ammonites of the Oxford Clay and Callovian seas.The fossil shown is the exact specimen you will receive, photographed alongside a 1cm scale cube for full sizing accuracy. Please refer to the listing images for full size and preservation detail. Geological & Palaeontological Information:
• Fossil Type: Ammonite
• Species: Quenstedtoceras lamberti (named by Oppel, 1857)
• Geological Period: Jurassic
• Stage: Upper Callovian (~161 to 158 million years ago)
• Location: Gristhorpe, Yorkshire, England, UK
• Depositional Environment: Offshore marine mudstone environment, part of the Oxford Clay and Kellaways Formation
• Order: Ammonitida
• Superfamily: Stephanoceratoidea
• Family: Cardioceratidae
• Biozone: lamberti Zone — a key ammonite biozone defining the uppermost Callovian interval Morphological Features:
• Involute shell with tightly coiled whorls
• Finely ribbed with sharp, dense ornamentation across flanks
• Rounded venter with strong ribbing extending continuously from umbilicus to keel
• Precise symmetry and strong curvature characteristic of Quenstedtoceras Notable Points:
• Quenstedtoceras lamberti defines the uppermost ammonite biozone of the Callovian, used globally in Jurassic stratigraphy
• Fossils from Gristhorpe are becoming increasingly rare due to erosion and accessibility limitations
• Excellent preservation and large size make this a collector-grade or museum-quality specimen Why This Fossil Stands Out:
• Rare and stratigraphically significant species
• Beautiful ribbing and form ideal for display or research
• Supplied with a Certificate of Authenticity
• 100% genuine and ethically sourced fossil
• Suitable for collectors, educators, palaeontology enthusiasts, or natural history displays
Upper Callovian Stage of the Jurassic Period, discovered in the classic Jurassic marine beds of Gristhorpe, Yorkshire, United Kingdom. This finely preserved specimen offers a beautifully detailed example of one of the most iconic ammonites of the Oxford Clay and Callovian seas.The fossil shown is the exact specimen you will receive, photographed alongside a 1cm scale cube for full sizing accuracy. Please refer to the listing images for full size and preservation detail. Geological & Palaeontological Information:
• Fossil Type: Ammonite
• Species: Quenstedtoceras lamberti (named by Oppel, 1857)
• Geological Period: Jurassic
• Stage: Upper Callovian (~161 to 158 million years ago)
• Location: Gristhorpe, Yorkshire, England, UK
• Depositional Environment: Offshore marine mudstone environment, part of the Oxford Clay and Kellaways Formation
• Order: Ammonitida
• Superfamily: Stephanoceratoidea
• Family: Cardioceratidae
• Biozone: lamberti Zone — a key ammonite biozone defining the uppermost Callovian interval Morphological Features:
• Involute shell with tightly coiled whorls
• Finely ribbed with sharp, dense ornamentation across flanks
• Rounded venter with strong ribbing extending continuously from umbilicus to keel
• Precise symmetry and strong curvature characteristic of Quenstedtoceras Notable Points:
• Quenstedtoceras lamberti defines the uppermost ammonite biozone of the Callovian, used globally in Jurassic stratigraphy
• Fossils from Gristhorpe are becoming increasingly rare due to erosion and accessibility limitations
• Excellent preservation and large size make this a collector-grade or museum-quality specimen Why This Fossil Stands Out:
• Rare and stratigraphically significant species
• Beautiful ribbing and form ideal for display or research
• Supplied with a Certificate of Authenticity
• 100% genuine and ethically sourced fossil
• Suitable for collectors, educators, palaeontology enthusiasts, or natural history displays
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