Description
This listing is for a Rare Fossil Ammonite (Perisphinctes (Dichotomosphinctes) antecedens) from the Middle Oxfordian Stage of the Late Jurassic, discovered at Le Vanneau, Deux-Sèvres, France.
100% Genuine Fossil Specimen – All of our fossils are authentic and come with a Certificate of Authenticity.
Exact Specimen Shown – The photos provided are of the actual fossil you will receive.
Scale for Reference – Scale rule squares/cube = 1cm. Please see photos for full sizing.
Geological & Scientific Details:
- Fossil Type: Ammonite (extinct marine mollusc, related to squid and octopus).
- Species: Perisphinctes (Dichotomosphinctes) antecedens.
- Order: Ammonitida.
- Superfamily: Perisphinctoidea.
- Family: Perisphinctidae.
- Geological Period: Jurassic.
- Stage/Age: Middle Oxfordian (approx. 163 – 157 million years ago).
- Locality: Le Vanneau, Deux-Sèvres, France.
Notable Features & Morphology:
- Shell Form: Evolute shell with widely open coiling, exposing inner whorls.
- Ribs: Prominent bifurcating ribs, a diagnostic feature of Dichotomosphinctes.
- Whorl Section: Rounded to slightly compressed, creating an ornate shell appearance.
- Size: A rare, well-preserved specimen, highly desirable among collectors.
Depositional Environment:
During the Oxfordian, western France was submerged under shallow epicontinental seas. These warm, carbonate-rich environments preserved ammonites and associated marine fauna in remarkable detail.
Scientific & Collecting Importance:
Perisphinctes (Dichotomosphinctes) antecedens is a key ammonite species for biostratigraphic correlation in the Oxfordian. Its characteristic ribbing and shell form make it an important index fossil as well as a valuable addition for fossil collectors.
Why Buy This Fossil?
- A rare ammonite species from the Oxfordian of France.
- Excellent preservation with distinctive ribbing.
- A highly collectible specimen for Jurassic ammonite enthusiasts or European fossil collectors.
- Supplied with a Certificate of Authenticity guaranteeing its provenance.
All of our fossils are responsibly sourced, carefully prepared, and chosen for quality.






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