Description
Euaspidoceras rotari Fossil Ammonite
This is a genuine Euaspidoceras rotari fossil ammonite from the Middle Oxfordian stage of the Jurassic Period, collected from Le Vanneau, Deux-Sèvres, France. This carefully chosen fossil comes from the Alice Purnell Collection and includes a Certificate of Authenticity lifetime guarantee generic card. The photograph shows the actual specimen you will receive, allowing collectors to view the real preservation, natural form, colour, surface texture and overall character of the fossil before purchase.
Full sizing can be seen in the photo. This is an excellent specimen for collectors of Jurassic ammonites, French fossils, Oxfordian ammonites, natural history pieces and display-quality marine fossils.
Jurassic Geology and Age
Euaspidoceras rotari dates from the Middle Oxfordian, part of the Late Jurassic Period, approximately 161 to 159 million years old. During this time, much of western Europe was covered by warm shallow to moderately deep seas. The region that is now western France formed part of a broad marine environment where carbonate-rich sediments, muds and limestones accumulated across ancient seabeds.
These Jurassic seas supported a rich ecosystem of ammonites, belemnites, bivalves, brachiopods, echinoids, crinoids, fish and marine reptiles. Ammonites were among the most successful marine animals of the period, and their fossil shells are especially important because they evolved quickly and are widely used for dating and correlating Jurassic rock layers.
Fossil Type and Species
This specimen is an ammonite, an extinct marine cephalopod related to modern squid, cuttlefish and nautilus. Ammonites lived inside coiled, chambered shells. The animal occupied the final outer body chamber, while earlier chambers helped regulate buoyancy, allowing it to move through the Jurassic water column.
Species: Euaspidoceras rotari
Genus: Euaspidoceras
Family: Aspidoceratidae
Superfamily: Aspidoceratoidea
Order: Ammonitida
Class: Cephalopoda
Phylum: Mollusca
Euaspidoceras is a distinctive Late Jurassic ammonite genus known for its robust shell form and bold ornamentation. Members of Aspidoceratidae are especially popular with collectors because they often display strong ribs, raised tubercles, nodular features and heavy shell sculpture, giving them a striking appearance compared with more finely ribbed ammonites.
Morphology and Display Features
Euaspidoceras rotari is valued for its classic coiled ammonite form combined with the strong sculptural character typical of aspidoceratid ammonites. The shell grew in a planispiral coil, with visible whorls recording each stage of the animal’s development. The ornamentation of Euaspidoceras may include raised ribs and tubercles, features that would have strengthened the shell and may also have helped with protection, hydrodynamics or species recognition.
This type of ammonite has excellent display appeal because it combines natural spiral geometry with a bold, textured surface. The fossil is suitable for a cabinet collection, educational geology display, natural history room or specialist ammonite collection. Its named species identification, Middle Oxfordian age and French locality make it particularly attractive to collectors who appreciate accurate geological and palaeontological context.
Le Vanneau, Deux-Sèvres Fossil Locality
This fossil comes from Le Vanneau in Deux-Sèvres, France, an area associated with Jurassic marine sedimentary deposits. During the Oxfordian, sediment built up on the seabed and buried ammonite shells and other marine remains. Over millions of years, compaction, mineralisation and geological processes preserved these shells as fossils.
French Jurassic ammonites are highly collectable because they represent classic European marine fossil faunas and often show attractive preservation. Oxfordian ammonites are particularly interesting because of the wide variety of shell forms found during this stage, including both elegant streamlined species and more heavily ornamented genera such as Euaspidoceras.
Authenticity and Collection Provenance
This Euaspidoceras rotari ammonite is a genuine fossil specimen from the Alice Purnell Collection and includes a Certificate of Authenticity lifetime guarantee generic card. The fossil has been carefully selected as a quality collector’s piece, and the photograph shows the exact specimen supplied.
As with all genuine fossils, natural cracks, mineralisation, matrix, preparation marks, surface texture, colour variation and age-related wear may be present. These features are normal characteristics of authentic fossils and form part of the specimen’s individual geological history. This Middle Oxfordian Euaspidoceras rotari from Le Vanneau, Deux-Sèvres, France is ideal for fossil collectors, ammonite specialists, geology enthusiasts and anyone seeking a genuine Jurassic marine fossil with strong display value and scientific interest.
