Prososphinctes anan Ammonite Fossil Oxfordian France Genuine Jurassic Specimen COA Niort Deux-Sèvres Collectable
£ 18.00
GENUINE PROSOSPHINCTES ANAN AMMONITE FOSSILThis is a genuine Prososphinctes anan ammonite fossil from the Upper Jurassic,
Oxfordian Stage, collected from Niort, Deux-Sèvres, Nouvelle-Aquitaine, France. This carefully chosen fossil specimen is an attractive and scientifically interesting piece for collectors of French ammonites, Upper Jurassic fossils, extinct marine cephalopods, natural history specimens, and well-labelled palaeontological display fossils.The photograph shows the actual fossil you will receive, allowing you to view the individual preservation, shell form, surface detail, colour, matrix, and natural character of this specific specimen before purchase. Full sizing details can be seen in the photo. This fossil includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as a genuine specimen. FOSSIL TYPE, SPECIES AND SCIENTIFIC CLASSIFICATIONPrososphinctes anan is an ammonite, an extinct marine cephalopod belonging to the order Ammonitida. Ammonites were related to modern squid, cuttlefish, octopus, and nautilus, and are among the most recognisable fossils of the Jurassic Period. Their coiled shells, chambered internal structure, varied ornamentation, and rapid evolutionary development make them highly valued by collectors and important in palaeontology.This fossil belongs to the genus Prososphinctes and the species Prososphinctes anan. Ammonites of this general group are commonly associated with perisphinctid-style Upper Jurassic forms, often recognised for their ribbed shell ornamentation, evolute coiling, visible umbilicus, and useful role in comparing marine Jurassic strata. The named species identification gives this specimen greater scientific and collecting interest than a general ammonite fossil. GEOLOGICAL AGE AND OXFORDIAN CONTEXTThis specimen dates from the Oxfordian Stage of the Upper Jurassic, approximately 164 to 157 million years ago. The Oxfordian was a time of widespread marine environments across parts of Europe, with ammonites forming a diverse and abundant part of ancient sea life. Because ammonites evolved quickly and were widely distributed, many species are valuable fossils for comparing and dating Jurassic sedimentary rocks.During the Oxfordian, ammonites such as Prososphinctes anan lived as active swimming marine animals. Their shells were divided into internal chambers, with the living animal occupying the outer body chamber. These chambers helped regulate buoyancy in the water column, while the outer shell shape, ribbing, whorl proportions, and umbilical structure are key features used in ammonite identification and comparison.After death, the shell could settle onto the sea floor and become buried by sediment. Over millions of years, mineralisation, compaction, and natural geological alteration preserved the ammonite form as a fossil. NIORT, DEUX-SÈVRES, NOUVELLE-AQUITAINE LOCALITYThis ammonite comes from Niort in Deux-Sèvres, Nouvelle-Aquitaine, France. This region of western France is known for Jurassic sedimentary rocks and fossil-bearing marine deposits that preserve evidence of ancient sea life. French Jurassic ammonites are highly collectable because they represent classic European marine faunas and provide well-contextualised fossils from important geological intervals.During the Oxfordian, the area that is now Nouvelle-Aquitaine was influenced by shallow marine conditions. Carbonate-rich sediments, limestones, marls, and sea-floor deposits helped preserve the remains of ammonites, belemnites, bivalves, brachiopods, gastropods, echinoids, and other marine invertebrates. These deposits record the ancient marine ecosystems that existed in western France during the Late Jurassic. AMMONITE MORPHOLOGY AND NATURAL FEATURESPrososphinctes anan displays the classic planispiral ammonite shell form, with the shell coiled in a flat spiral. The whorls represent successive growth stages as the ammonite matured. Ammonites of this type are often admired for their visible umbilicus, ribbed ornamentation, balanced coiling, and strong natural spiral outline.Depending on preservation, this fossil may show whorl shape, rib detail, shell curvature, natural mineral staining, matrix attachment, surface wear, or fossilisation texture. The ribbing and coiling pattern provide much of the fossil’s visual character and are also important features used in scientific comparison. Natural details such as small fractures, sedimentary contact marks, worn areas, colour variation, mineral deposits, and matrix are part of the fossil’s geological history and help distinguish a genuine natural fossil from a modern cast or replica. COLLECTING, DISPLAY AND EDUCATIONAL INTERESTThis Prososphinctes anan ammonite fossil is well suited for display in a fossil cabinet, study, classroom, office, collection drawer, natural history arrangement, or Upper Jurassic fossil collection. Its named species identification, Oxfordian age, French origin, and classic ammonite form give it strong collecting appeal.It is suitable for collectors interested in French fossils, Jurassic ammonites, extinct cephalopods, marine invertebrates, palaeontology, geology, educational fossil specimens, and natural history display pieces. The natural coiled shell form gives the fossil immediate visual impact, while the species name, geological age, and Niort locality provide valuable scientific context for anyone interested in prehistoric marine environments. AUTHENTICITY AND SPECIMEN DETAILSThis is a genuine Prososphinctes anan ammonite fossil from the Upper Jurassic, Oxfordian Stage, Niort, Deux-Sèvres, Nouvelle-Aquitaine, France. It includes a Certificate of Authenticity lifetime guarantee generic card. The photo shows the actual fossil you will receive, and full sizing information can be seen in the photo.
Oxfordian Stage, collected from Niort, Deux-Sèvres, Nouvelle-Aquitaine, France. This carefully chosen fossil specimen is an attractive and scientifically interesting piece for collectors of French ammonites, Upper Jurassic fossils, extinct marine cephalopods, natural history specimens, and well-labelled palaeontological display fossils.The photograph shows the actual fossil you will receive, allowing you to view the individual preservation, shell form, surface detail, colour, matrix, and natural character of this specific specimen before purchase. Full sizing details can be seen in the photo. This fossil includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as a genuine specimen. FOSSIL TYPE, SPECIES AND SCIENTIFIC CLASSIFICATIONPrososphinctes anan is an ammonite, an extinct marine cephalopod belonging to the order Ammonitida. Ammonites were related to modern squid, cuttlefish, octopus, and nautilus, and are among the most recognisable fossils of the Jurassic Period. Their coiled shells, chambered internal structure, varied ornamentation, and rapid evolutionary development make them highly valued by collectors and important in palaeontology.This fossil belongs to the genus Prososphinctes and the species Prososphinctes anan. Ammonites of this general group are commonly associated with perisphinctid-style Upper Jurassic forms, often recognised for their ribbed shell ornamentation, evolute coiling, visible umbilicus, and useful role in comparing marine Jurassic strata. The named species identification gives this specimen greater scientific and collecting interest than a general ammonite fossil. GEOLOGICAL AGE AND OXFORDIAN CONTEXTThis specimen dates from the Oxfordian Stage of the Upper Jurassic, approximately 164 to 157 million years ago. The Oxfordian was a time of widespread marine environments across parts of Europe, with ammonites forming a diverse and abundant part of ancient sea life. Because ammonites evolved quickly and were widely distributed, many species are valuable fossils for comparing and dating Jurassic sedimentary rocks.During the Oxfordian, ammonites such as Prososphinctes anan lived as active swimming marine animals. Their shells were divided into internal chambers, with the living animal occupying the outer body chamber. These chambers helped regulate buoyancy in the water column, while the outer shell shape, ribbing, whorl proportions, and umbilical structure are key features used in ammonite identification and comparison.After death, the shell could settle onto the sea floor and become buried by sediment. Over millions of years, mineralisation, compaction, and natural geological alteration preserved the ammonite form as a fossil. NIORT, DEUX-SÈVRES, NOUVELLE-AQUITAINE LOCALITYThis ammonite comes from Niort in Deux-Sèvres, Nouvelle-Aquitaine, France. This region of western France is known for Jurassic sedimentary rocks and fossil-bearing marine deposits that preserve evidence of ancient sea life. French Jurassic ammonites are highly collectable because they represent classic European marine faunas and provide well-contextualised fossils from important geological intervals.During the Oxfordian, the area that is now Nouvelle-Aquitaine was influenced by shallow marine conditions. Carbonate-rich sediments, limestones, marls, and sea-floor deposits helped preserve the remains of ammonites, belemnites, bivalves, brachiopods, gastropods, echinoids, and other marine invertebrates. These deposits record the ancient marine ecosystems that existed in western France during the Late Jurassic. AMMONITE MORPHOLOGY AND NATURAL FEATURESPrososphinctes anan displays the classic planispiral ammonite shell form, with the shell coiled in a flat spiral. The whorls represent successive growth stages as the ammonite matured. Ammonites of this type are often admired for their visible umbilicus, ribbed ornamentation, balanced coiling, and strong natural spiral outline.Depending on preservation, this fossil may show whorl shape, rib detail, shell curvature, natural mineral staining, matrix attachment, surface wear, or fossilisation texture. The ribbing and coiling pattern provide much of the fossil’s visual character and are also important features used in scientific comparison. Natural details such as small fractures, sedimentary contact marks, worn areas, colour variation, mineral deposits, and matrix are part of the fossil’s geological history and help distinguish a genuine natural fossil from a modern cast or replica. COLLECTING, DISPLAY AND EDUCATIONAL INTERESTThis Prososphinctes anan ammonite fossil is well suited for display in a fossil cabinet, study, classroom, office, collection drawer, natural history arrangement, or Upper Jurassic fossil collection. Its named species identification, Oxfordian age, French origin, and classic ammonite form give it strong collecting appeal.It is suitable for collectors interested in French fossils, Jurassic ammonites, extinct cephalopods, marine invertebrates, palaeontology, geology, educational fossil specimens, and natural history display pieces. The natural coiled shell form gives the fossil immediate visual impact, while the species name, geological age, and Niort locality provide valuable scientific context for anyone interested in prehistoric marine environments. AUTHENTICITY AND SPECIMEN DETAILSThis is a genuine Prososphinctes anan ammonite fossil from the Upper Jurassic, Oxfordian Stage, Niort, Deux-Sèvres, Nouvelle-Aquitaine, France. It includes a Certificate of Authenticity lifetime guarantee generic card. The photo shows the actual fossil you will receive, and full sizing information can be seen in the photo.
Other Products
