Description
This listing is for a Rare Fossil Ammonite (Perisphinctes (Dichotomoceras) stenocycloides) 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 (Dichotomoceras) stenocycloides.
- 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 open coiling, inner whorls visible.
- Ribs: Strong, bifurcating ribs across the flanks, a key feature of Dichotomoceras.
- Whorl Section: Rounded to slightly compressed, producing a bold ornamental appearance.
- Size: A rare, well-preserved specimen, highly desirable for collectors.
Depositional Environment:
During the Oxfordian, the region that is now western France was part of a shallow epicontinental sea. Warm, carbonate-rich marine sediments allowed for excellent preservation of ammonites and associated marine fauna.
Scientific & Collecting Importance:
Perisphinctes (Dichotomoceras) stenocycloides is a significant ammonite species for biostratigraphic correlation in the Oxfordian. Its diagnostic ribbing and evolute form make it an important index fossil and a prized collector’s piece.
Why Buy This Fossil?
- A rare ammonite species from the Oxfordian of France.
- Excellent preservation with diagnostic ribbing and shell form.
- A valuable addition for collectors of Jurassic ammonites or European fossil material.
- 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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