Rare 3" Orthaspidoceras lallierianum Fossil Ammonite – Middle Kimmeridgian, Upper Jurassic, La Rochelle France – Genuine + COA
£ 60.00
A rare 3-inch Orthaspidoceras lallierianum Fossil Ammonite, from the Middle
Kimmeridgian Stage of the Upper Jurassic, collected at La Rochelle, France. This ammonite is a striking representative of the genus Orthaspidoceras, characterised by its robust whorls and strong ribbing. The specimen shown in the photographs is the exact one you will receive, and it is supplied with a Certificate of Authenticity.Fossil Type & Species:
• Type: Ammonite (extinct marine cephalopod)
• Species: Orthaspidoceras lallierianum
• Order: Ammonitida
• Superfamily: Perisphinctoidea
• Family: AspidoceratidaeGeological Context:
• Period: Jurassic
• Epoch/Stage: Upper Jurassic – Middle Kimmeridgian (approx. 155 to 154 million years ago)
• Biozone: Typically associated with the Acanthicum Zone, important in Kimmeridgian stratigraphy across Europe
• Formation: Kimmeridgian limestones and marls of western France
• Depositional Environment: Marine shelf with carbonate sedimentation, providing excellent conditions for ammonite fossilisationLocality:
• Region: La Rochelle, FranceMorphology & Features:
• Strong, thick shell with pronounced whorls
• Coarse ribbing across the flanks, ribs extending over the venter
• Evolute shell structure with moderately wide umbilicus
• Diagnostic features of Orthaspidoceras make it a collectable specimenScientific Notes:
• Orthaspidoceras lallierianum was first described in the 19th century during detailed studies of French Jurassic ammonites
• The genus Orthaspidoceras is a significant taxon within the family Aspidoceratidae, providing key information on Kimmeridgian biostratigraphyNotable Details:
• Excellent preservation of ribbing and shell detail
• Rare French ammonite from a classic Jurassic fossil locality
• 100% genuine, natural fossil with no restoration
• Scale Reference: Each square or cube in the image = 1cm. Please see photos for exact sizingAuthenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Each specimen includes a Certificate of Authenticity. The fossil pictured is the exact one you will receive. This Orthaspidoceras lallierianum ammonite is a rare and scientifically valuable fossil from the Middle Kimmeridgian of La Rochelle – a superb addition for collectors, researchers, or natural history displays.
Kimmeridgian Stage of the Upper Jurassic, collected at La Rochelle, France. This ammonite is a striking representative of the genus Orthaspidoceras, characterised by its robust whorls and strong ribbing. The specimen shown in the photographs is the exact one you will receive, and it is supplied with a Certificate of Authenticity.Fossil Type & Species:
• Type: Ammonite (extinct marine cephalopod)
• Species: Orthaspidoceras lallierianum
• Order: Ammonitida
• Superfamily: Perisphinctoidea
• Family: AspidoceratidaeGeological Context:
• Period: Jurassic
• Epoch/Stage: Upper Jurassic – Middle Kimmeridgian (approx. 155 to 154 million years ago)
• Biozone: Typically associated with the Acanthicum Zone, important in Kimmeridgian stratigraphy across Europe
• Formation: Kimmeridgian limestones and marls of western France
• Depositional Environment: Marine shelf with carbonate sedimentation, providing excellent conditions for ammonite fossilisationLocality:
• Region: La Rochelle, FranceMorphology & Features:
• Strong, thick shell with pronounced whorls
• Coarse ribbing across the flanks, ribs extending over the venter
• Evolute shell structure with moderately wide umbilicus
• Diagnostic features of Orthaspidoceras make it a collectable specimenScientific Notes:
• Orthaspidoceras lallierianum was first described in the 19th century during detailed studies of French Jurassic ammonites
• The genus Orthaspidoceras is a significant taxon within the family Aspidoceratidae, providing key information on Kimmeridgian biostratigraphyNotable Details:
• Excellent preservation of ribbing and shell detail
• Rare French ammonite from a classic Jurassic fossil locality
• 100% genuine, natural fossil with no restoration
• Scale Reference: Each square or cube in the image = 1cm. Please see photos for exact sizingAuthenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Each specimen includes a Certificate of Authenticity. The fossil pictured is the exact one you will receive. This Orthaspidoceras lallierianum ammonite is a rare and scientifically valuable fossil from the Middle Kimmeridgian of La Rochelle – a superb addition for collectors, researchers, or natural history displays.
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