Description
Genuine Fehlmannites sp. Ammonite Fossil
This listing is for a genuine Fehlmannites sp. ammonite fossil from the Upper Jurassic, Lower Oxfordian Stage, found in France. This carefully chosen fossil specimen is an excellent piece for collectors of Jurassic ammonites, French fossils, fossil cephalopods, prehistoric marine life, natural history specimens, and educational geology displays.
The photograph shows the actual fossil specimen you will receive, so the colour, shape, preservation, surface detail, and natural character shown in the image belong to this exact fossil. For full sizing and scale, please see the photo.
Fossil Type and Scientific Interest
This fossil is an ammonite, an extinct marine cephalopod related to modern squid, cuttlefish, octopus, and nautilus. Ammonites are among the most famous and collectable fossils from the Jurassic Period, admired for their spiral shells, chambered internal structure, varied ornamentation, and importance in dating ancient marine rock layers.
The specimen is identified as Fehlmannites sp., meaning it belongs to the genus Fehlmannites, while the exact species is not specified. This is a common and useful palaeontological identification when the genus can be recognised, but species-level assignment may depend on fine shell features, preservation, whorl shape, suture detail, or specialist comparison.
As an ammonite, this specimen represents the mineralised shell of a marine animal that lived more than 160 million years ago. The shell was divided internally into chambers by walls called septa. The living animal occupied the final outer body chamber, while earlier chambers helped regulate buoyancy in the water column. This chambered shell structure allowed ammonites to become highly successful marine animals throughout Jurassic seas.
Depending on preservation, Fehlmannites ammonites may show planispiral coiling, curved whorl development, natural shell relief, fine surface texture, ribbing, mineral staining, and fossilised growth features. These traits make the specimen attractive as both a display fossil and a study piece for collectors interested in ammonite morphology.
Upper Jurassic Lower Oxfordian Age
This ammonite dates from the Upper Jurassic Period, specifically the Lower Oxfordian, approximately 163 to 160 million years old. The Oxfordian was an important stage in Jurassic marine history, when ammonites were diverse, widespread, and rapidly evolving across ancient seas.
During the Lower Oxfordian, much of Europe was covered by warm shallow to moderately deep marine environments. These seas supported a rich ecosystem of ammonites, belemnites, bivalves, brachiopods, gastropods, crinoids, sponges, corals, fish, and marine reptiles. Ammonites such as Fehlmannites lived in these waters with their chambered shells providing buoyancy and protection.
After death, the ammonite shell could settle onto the sea floor and become buried in sediment. Over millions of years, mineralisation, compaction, and geological pressure preserved the shell as a fossil, creating a natural record of life in the Jurassic oceans.
French Jurassic Geology
This fossil comes from France, a country with a rich and well-known Jurassic fossil record. French Jurassic deposits are highly regarded by collectors because they preserve a wide range of ammonites and other marine fossils from ancient seas that once covered large areas of western Europe.
Fossils from French Oxfordian strata are especially valued because ammonites from this time are useful for understanding Jurassic marine environments and comparing rock layers across different regions. A fossil with clear age, stage, and genus information is far more desirable than an unlabelled decorative ammonite, as it can be properly catalogued, displayed, and appreciated within a scientific or educational collection.
Natural Collector Display Specimen
This Fehlmannites sp. ammonite fossil is suitable for fossil collectors, geology students, teachers, natural history enthusiasts, and anyone interested in prehistoric marine life. It would display well in a fossil cabinet, educational teaching set, study collection, curiosity cabinet, or natural history-themed display.
As with all genuine fossils, the specimen may show natural characteristics such as matrix, mineral staining, surface texture, small cracks, weathering, repaired areas, or variations in preservation. These features are normal in authentic fossils and form part of the specimen’s geological history and natural appeal.
Certificate of Authenticity Included
This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. This provides reassurance that the fossil supplied is authentic and suitable for collecting, study, gifting, display, resale, or educational use.
You will receive the exact Fehlmannites sp. ammonite fossil shown in the photo, from the Upper Jurassic Lower Oxfordian of France.
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