RARE Caumatosphinctes bifurcus Fossil Ammonite – Upper Bajocian, Jurassic – Caen, France – Alice Purnell Collection

Description

This listing offers a rare and scientifically significant Caumatosphinctes bifurcus fossil ammonite from the Upper Bajocian Stage of the Middle Jurassic Period, dating back approximately 170 million years. This exceptional specimen was discovered in Caen, Normandy, France, and is part of the prestigious Alice Purnell Collection.

Caumatosphinctes is a genus of extinct ammonites belonging to the family Perisphinctidae. These marine molluscs are characterised by their finely ribbed, involute shells and distinctively bifurcating rib structures, which offer palaeontologists key insights into Middle Jurassic ammonite evolution and zonation. Caumatosphinctes bifurcus, in particular, is known for its bifurcating ribs that split neatly into secondary ribs across the shell’s flanks, producing a striking ornamental appearance.

The ammonite inhabited shallow epicontinental seas that covered much of Europe during the Jurassic period. The sedimentary deposits of the Caen Basin are highly fossiliferous and have yielded important marine fauna including ammonites, belemnites, bivalves, and brachiopods. Fossils from this locality are highly sought after for both their scientific relevance and display value.

This fossil ammonite has been naturally preserved, showcasing excellent detail of its ribbing and curvature. A premium addition to any fossil collection, educational exhibit, or interior decor inspired by natural history.

Item Details:

• Specimen: Caumatosphinctes bifurcus (Ammonite)
• Age: Upper Bajocian, Middle Jurassic (~170 million years ago)
• Geological Formation: Jurassic marine limestone
• Location: Caen, Normandy, France
• Source: Alice Purnell Collection
• Certificate of Authenticity: Included
• Scale Reference: Scale rule square/cube = 1cm. Please refer to photos for full sizing.

ACTUAL AS SEEN: The image displays the exact specimen you will receive. Each fossil is carefully hand-selected and professionally photographed. Dimensions are as accurate as possible but may slightly vary due to natural irregularities. Colouration may appear differently depending on light conditions and monitor calibration.

Once sold, this listing will be updated with a new specimen and new images. We advise saving a screenshot of the item upon purchase for your records. All images are archived.

Add a genuine piece of Jurassic marine history to your collection with this stunning Caumatosphinctes bifurcus ammonite – a unique treasure from France’s prehistoric seas.