Description
This listing features a genuine Zugodactylites ammonite fossil, collected from the Toarcian Stage of the Jurassic Period, near Caen, Normandy, France. Dating to approximately 183 to 174 million years ago, this ammonite comes from a time when Europe was covered by shallow seas, teeming with life.
The exact fossil shown in the listing photos is the item you will receive, selected for its scientific value, preservation quality, and aesthetic appeal. This is an excellent specimen for fossil collectors, educators, and enthusiasts of ancient marine life.
Geological & Palaeontological Details:
- Genus: Zugodactylites
- Fossil Type: Ammonite
- Family: Dactylioceratidae
- Superfamily: Dactyliocerataceae
- Order: Ammonitida
- Geological Period: Jurassic
- Stage: Lower Jurassic – Toarcian (approx. 183–174 million years ago)
- Formation: Likely derived from the Caen limestones or associated Toarcian clay/marl beds
- Location: Caen, Normandy, France
- Biozone: Possibly associated with the Bifrons Zone, depending on precise stratigraphy within the Toarcian
- Depositional Environment: Shallow marine shelf with fine-grained clay or marl deposition under oxygenated conditions, supporting diverse cephalopod faunas
Morphology & Features:
- Zugodactylites is known for its evolute coiling, with all whorls visible and a relatively open umbilicus
- Shell is usually flattened, with strong, dense, and often bifurcating radial ribbing
- Lateral ribs may split or remain simple, often terminating in small ventrolateral nodes or subtle tubercles
- The overall appearance is striking and diagnostic for Toarcian Dactylioceratidae ammonites
Notability: Zugodactylites is a well-recognised genus within early Jurassic ammonite biostratigraphy and is used to help define subdivisions of the Toarcian in European sequences. Specimens from the Caen region are sought after for their exceptional preservation and are a valuable addition to any palaeontological collection.
Additional Details:
- All our fossils are 100% genuine specimens
- Includes a Certificate of Authenticity
- The photo shows the exact fossil for sale
- Scale cube = 1cm – refer to the photos for full sizing details
A beautifully preserved ammonite from the Jurassic seas of France, this Zugodactylites fossil is ideal for collectors and educators alike. Add this striking example of ancient marine life to your collection today.





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