RARE Bigotites thevenini Fossil Ammonite – Upper Bajocian, Jurassic, Calvados France – Genuine + COA
£ 24.00
An exceptionally rare and well-preserved Bigotites thevenini Fossil Ammonite,
from the Upper Bajocian Stage of the Jurassic Period, collected in Calvados, Normandy, France. This ammonite is a true collector’s piece, representing a less commonly encountered genus with distinctive ribbing and stratigraphic importance. Comes with a Certificate of Authenticity, and the exact fossil pictured is the one you will receive.Fossil Type & Species:
• Type: Ammonite (extinct marine cephalopod)
• Species: Bigotites thevenini
• Order: Ammonitida
• Superfamily: Stephanoceratoidea
• Family: StephanoceratidaeGeological Context:
• Period: Jurassic
• Epoch/Stage: Middle Jurassic – Upper Bajocian (approx. 170.3 to 168.3 million years ago)
• Biozone: Likely from the Parkinsonia or Garantiana zone (Bigotites often associated with finer zonal subdivisions in regional stratigraphy)
• Depositional Environment: Marine shelf environment with alternating marl and limestone beds – rich in cephalopod faunaLocality:
• Region: Calvados, Normandy, France
• Formation: Bajocian limestone-marl sequences of the Paris Basin (formation unconfirmed)Morphology & Features:
• Strongly evolute shell with broad umbilicus
• Sharp, widely spaced ribs, with occasional tuberculation
• Flanks relatively flat; ribs extend across the venter without interruption
• Characteristic of Bigotites, which is distinguished from contemporaneous forms by its ornamentation patternScientific Notes:
• Bigotites thevenini was described by de Grossouvre and named in the early 20th century
• A rare genus important for understanding evolutionary transitions within Stephanoceratidae during the BajocianNotable Details:
• Excellent preservation and detail; natural and unrestored
• Ideal for academic study or high-end display collections
• Scale Reference: Each square or cube in the image = 1cm. See photo for accurate sizingAuthenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and come with a Certificate of Authenticity. The fossil you see in the photo is the exact one you will receive. This rare Bigotites thevenini ammonite offers both aesthetic appeal and palaeontological significance. A must-have for collectors of European Jurassic cephalopods.
from the Upper Bajocian Stage of the Jurassic Period, collected in Calvados, Normandy, France. This ammonite is a true collector’s piece, representing a less commonly encountered genus with distinctive ribbing and stratigraphic importance. Comes with a Certificate of Authenticity, and the exact fossil pictured is the one you will receive.Fossil Type & Species:
• Type: Ammonite (extinct marine cephalopod)
• Species: Bigotites thevenini
• Order: Ammonitida
• Superfamily: Stephanoceratoidea
• Family: StephanoceratidaeGeological Context:
• Period: Jurassic
• Epoch/Stage: Middle Jurassic – Upper Bajocian (approx. 170.3 to 168.3 million years ago)
• Biozone: Likely from the Parkinsonia or Garantiana zone (Bigotites often associated with finer zonal subdivisions in regional stratigraphy)
• Depositional Environment: Marine shelf environment with alternating marl and limestone beds – rich in cephalopod faunaLocality:
• Region: Calvados, Normandy, France
• Formation: Bajocian limestone-marl sequences of the Paris Basin (formation unconfirmed)Morphology & Features:
• Strongly evolute shell with broad umbilicus
• Sharp, widely spaced ribs, with occasional tuberculation
• Flanks relatively flat; ribs extend across the venter without interruption
• Characteristic of Bigotites, which is distinguished from contemporaneous forms by its ornamentation patternScientific Notes:
• Bigotites thevenini was described by de Grossouvre and named in the early 20th century
• A rare genus important for understanding evolutionary transitions within Stephanoceratidae during the BajocianNotable Details:
• Excellent preservation and detail; natural and unrestored
• Ideal for academic study or high-end display collections
• Scale Reference: Each square or cube in the image = 1cm. See photo for accurate sizingAuthenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and come with a Certificate of Authenticity. The fossil you see in the photo is the exact one you will receive. This rare Bigotites thevenini ammonite offers both aesthetic appeal and palaeontological significance. A must-have for collectors of European Jurassic cephalopods.
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