Description
Osperlioceras reynesi Ammonite Fossil from Aveyron, Occitanie, France
This genuine Osperlioceras reynesi ammonite fossil comes from Aveyron, Occitanie, France, and dates to the Upper Toarcian Stage of the Lower Jurassic, within the Insigne Zone. It is a carefully chosen fossil specimen, supplied with a Certificate of Authenticity lifetime guarantee generic card. Full sizing can be seen in the photo, and the image shows the actual fossil specimen you will receive.
Osperlioceras reynesi is a collectable Lower Jurassic ammonite, valued for its named species identification, clearly recorded geological zone, French locality and classic fossil cephalopod form. Specimens from Aveyron are especially desirable for collectors of European ammonites, Toarcian fossils, French Jurassic specimens, fossil cephalopods and natural history display pieces.
Species and Scientific Interest
Osperlioceras reynesi is an extinct ammonite species belonging to the ammonoid cephalopods, a group of marine molluscs related to modern squid, cuttlefish and nautilus. Ammonites lived in ancient seas and produced coiled, chambered shells. The animal occupied the outer body chamber, while the internal chambers helped control buoyancy as it moved through the water column.
The species name reynesi identifies this fossil at species level, making it especially appealing for collectors who prefer accurately labelled ammonites with clear scientific information. Named ammonites are highly valued because they can help place a fossil within a more precise geological and palaeontological context.
Osperlioceras is associated with Toarcian ammonite faunas of the Lower Jurassic. Ammonites from this interval are important in palaeontology because many species evolved rapidly and were widely distributed across ancient seas. Their shell forms are used to date and correlate rock layers, making specimens such as Osperlioceras reynesi both attractive display fossils and useful examples of Jurassic biostratigraphy.
Upper Toarcian and Insigne Zone Geology
This fossil dates to the Upper Toarcian, the later part of the Toarcian Stage of the Lower Jurassic, approximately 174 to 183 million years old. The specimen is associated with the Insigne Zone, an ammonite biozone used to help divide and identify particular intervals within the Toarcian rock sequence. This zonal information adds extra scientific interest and makes the fossil especially suitable for a labelled collection.
During the Toarcian, much of western Europe was covered by marine environments ranging from shallow shelf seas to deeper offshore settings. These waters supported a diverse ecosystem of ammonites, belemnites, bivalves, brachiopods, gastropods, fish and marine reptiles. Sediments such as marls, clays, limestones and organic-rich deposits accumulated on ancient sea floors, preserving the remains of marine organisms over millions of years.
The Toarcian is one of the most important intervals of the Jurassic for ammonite study. Fossils from this stage record changing sea conditions, evolving marine faunas and detailed fossil zones that allow geologists to compare deposits across Europe.
Locality: Aveyron, Occitanie, France
This specimen comes from Aveyron in the Occitanie region of southern France, an area known for fossil-bearing Jurassic sedimentary rocks. During the Lower Jurassic, this part of France formed part of a marine setting connected to wider European seas. The sediments deposited in these waters later became fossiliferous strata, preserving ammonites and other marine life from the Toarcian seas.
French Jurassic ammonites are highly collectable due to their variety, strong geological importance and attractive preservation. A labelled specimen from Aveyron adds excellent locality detail to a fossil collection and is ideal for anyone building a display of French fossils, Lower Jurassic ammonites, Toarcian specimens or European natural history material.
Morphology and Display Features
Osperlioceras reynesi displays the classic coiled planispiral shell form associated with ammonites. Depending on preservation, the fossil may show visible whorls, ribbing, growth lines, natural shell texture and surface detail. These features formed part of the original shell structure and are important for both identification and visual appeal.
The shell ornamentation of Toarcian ammonites can vary between fine ribbing, stronger rib patterns and smoother areas depending on genus, species and growth stage. Natural colours may include cream, beige, grey, brown or iron-rich tones, influenced by the sediment and mineral conditions present during fossilisation. Variations in matrix, rib definition, shell detail, colour and preservation are part of the fossil’s authentic geological character.
Authenticity and Collector Appeal
This Osperlioceras reynesi ammonite is a genuine Upper Toarcian Lower Jurassic fossil from Aveyron, Occitanie, France. It includes a Certificate of Authenticity lifetime guarantee generic card, giving confidence to fossil collectors, geology enthusiasts, students and gift buyers.
With its named species, Insigne Zone provenance, French locality, Lower Jurassic age and classic ammonite form, this fossil would make an excellent addition to a Jurassic fossil collection, European ammonite display, Toarcian fossil suite, educational geology cabinet, natural history collection or specialist fossil cephalopod display.
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