Description
This listing is for a RARE and beautifully preserved fossil ammonite – Perisphinctes (Dichotomosphinctes) elizabethae, collected from the Middle Oxfordian Stage of the Jurassic Period, in Charente, France. This specimen is a classic example of the elegant ribbing and open coiling that define the Perisphinctid lineage and is highly desirable for both collectors and scientific study.
All of our fossils are 100% genuine and come with a Certificate of Authenticity. The exact specimen shown in the photos is the one you will receive. Please see the photo with a 1cm scale cube for accurate sizing.
Fossil Overview:
- Scientific Name: Perisphinctes (Dichotomosphinctes) elizabethae
- Common Name: Jurassic Fossil Ammonite
- Geological Period: Jurassic
- Stage: Middle Oxfordian (~160–157 million years ago)
- Location: Charente, France
- Preservation Type: Body fossil in limestone or marl
- Size: See scale in photo
Geological & Depositional Environment:
This ammonite was preserved in marine sedimentary rocks deposited during the Middle Oxfordian, a time of widespread carbonate platform development across Western Europe. The Charente region was covered by a shallow, warm epicontinental sea where sedimentation of fine calcareous muds and marls allowed for the exceptional preservation of marine fauna.
The Oxfordian is particularly noted for its rich ammonite fauna, with Perisphinctes species serving as key biostratigraphic index fossils that help geologists correlate rock layers across regions.
Taxonomy & Classification:
- Kingdom: Animalia
- Phylum: Mollusca
- Class: Cephalopoda
- Order: Ammonitida
- Superfamily: Perisphinctoidea
- Family: Perisphinctidae
- Genus: Perisphinctes
- Subgenus: Dichotomosphinctes
- Species: elizabethae
Morphological Features:
Perisphinctes (Dichotomosphinctes) elizabethae is characterised by:
- A moderately evolute shell
- Prominent, bifurcating ribs extending from the umbilical shoulder
- A rounded venter and flat flanks
- Fine ribbing detail reflecting growth stages
- Symmetrical coiling and elegant whorl expansion
These features suggest the animal was a nektonic predator, swimming freely in the open marine environment and preying on smaller organisms.
Notable Aspects:
- Well-preserved classic Middle Oxfordian ammonite
- Elegant, ribbed ornamentation ideal for study or display
- Collected from a fossil-rich limestone/marl formation in southwest France
- Useful for educational and biostratigraphic purposes
Why Buy From Us?
- All specimens are 100% genuine, responsibly sourced
- Comes with a Certificate of Authenticity
- The exact fossil shown is the one you’ll receive
- Professionally packaged and dispatched promptly
Own a scientifically valuable and beautifully preserved ammonite from the Jurassic seas of France with this authentic Perisphinctes (Dichotomosphinctes) elizabethae specimen — a true showcase piece of palaeontology and geological history.
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