Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.
RARE 6.5″ Siemiradzkia aurigera Fossil Ammonite | Bathonian Jurassic | Nevers France | Authentic Certified Specimen
£42.00
A rare and finely preserved 6.5″ fossil ammonite: Siemiradzkia aurigera from the Bathonian Stage of the Middle Jurassic, discovered near Nevers, France. This elegant ammonite exemplifies the intricate shell structure and ornamentation characteristic of mid-Jurassic ammonites and is a scientifically and visually significant piece for collectors or institutions.
You will receive the exact specimen shown in the photographs, carefully selected and professionally documented. A 1cm scale cube is included for precise sizing—please refer to the images for full details.
Geological & Palaeontological Information:
Fossil Type: Ammonite
Species:Siemiradzkia aurigera (originally described by d’Orbigny)
Geological Period: Jurassic
Stage: Bathonian (~168 to 166 million years ago)
Location: Nevers, Nièvre Department, France
Depositional Environment: Shallow epicontinental marine basin with carbonate-rich sediments
Order: Ammonitida
Superfamily: Stephanoceratoidea
Family: Morphoceratidae
Biozone (Inferred): Possibly from the Zigzag Zone or Retrocostatum Zone, commonly associated with Middle Bathonian ammonites in this region
Morphological Features:
Elegantly ribbed, involute shell with compressed whorls
Faint keel or smooth venter depending on growth stage and preservation
Radiating ribs which may bifurcate or curve slightly forward near the ventrolateral edge
Often shows fine suture patterns under appropriate lighting or preparation
Notable Points:
Siemiradzkia aurigera is a relatively uncommon Bathonian ammonite species, typically restricted to select stratigraphic horizons in central France
Named and classified by Alcide d’Orbigny, one of the pioneers of Jurassic palaeontology
Mid-Jurassic fossils from Nevers are increasingly scarce on the market, especially of this quality and size
Why This Fossil is Special:
Rare European ammonite species with academic and collector interest
Beautiful shell architecture and excellent preservation
Comes with a Certificate of Authenticity for full verification
Ethically sourced and 100% natural
Perfect for serious fossil collectors, academic institutions, or display
A rare and finely preserved 6.5″ fossil ammonite: Siemiradzkia aurigera from the Bathonian Stage of the Middle Jurassic, discovered near Nevers, France. This elegant ammonite exemplifies the intricate shell structure and ornamentation characteristic of mid-Jurassic ammonites and is a scientifically and visually significant piece for collectors or institutions.
You will receive the exact specimen shown in the photographs, carefully selected and professionally documented. A 1cm scale cube is included for precise sizing—please refer to the images for full details.
Geological & Palaeontological Information:
Fossil Type: Ammonite
Species:Siemiradzkia aurigera (originally described by d’Orbigny)
Geological Period: Jurassic
Stage: Bathonian (~168 to 166 million years ago)
Location: Nevers, Nièvre Department, France
Depositional Environment: Shallow epicontinental marine basin with carbonate-rich sediments
Order: Ammonitida
Superfamily: Stephanoceratoidea
Family: Morphoceratidae
Biozone (Inferred): Possibly from the Zigzag Zone or Retrocostatum Zone, commonly associated with Middle Bathonian ammonites in this region
Morphological Features:
Elegantly ribbed, involute shell with compressed whorls
Faint keel or smooth venter depending on growth stage and preservation
Radiating ribs which may bifurcate or curve slightly forward near the ventrolateral edge
Often shows fine suture patterns under appropriate lighting or preparation
Notable Points:
Siemiradzkia aurigera is a relatively uncommon Bathonian ammonite species, typically restricted to select stratigraphic horizons in central France
Named and classified by Alcide d’Orbigny, one of the pioneers of Jurassic palaeontology
Mid-Jurassic fossils from Nevers are increasingly scarce on the market, especially of this quality and size
Why This Fossil is Special:
Rare European ammonite species with academic and collector interest
Beautiful shell architecture and excellent preservation
Comes with a Certificate of Authenticity for full verification
Ethically sourced and 100% natural
Perfect for serious fossil collectors, academic institutions, or display
Additional information
Era
Jurassic
Origin
France
Jurassic Information
The Jurassic Period (201–145 million years ago) was the golden age of dinosaurs, with iconic species like Brachiosaurus, Stegosaurus, and Allosaurus dominating the land. It was a time of warm, humid climates, with high sea levels that created vast shallow seas, supporting abundant marine reptiles, ammonites, and early coral reefs. The first birds, such as Archaeopteryx, evolved from small theropod dinosaurs, while early mammals remained small and nocturnal. Lush forests of cycads, conifers, and ferns covered the land, providing food for giant herbivores. The breakup of the supercontinent Pangaea accelerated, shaping Earth's geography and setting the stage for the diverse ecosystems of the Cretaceous.
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