Description
This listing offers a well-preserved specimen of Idoceras planula, an extinct ammonite species from the Upper Kimmeridgian stage of the Late Jurassic (~154 to 152 million years ago). It was discovered in Madagascar, a region renowned for yielding beautifully preserved and scientifically valuable marine fossils.
Idoceras is a genus of the Perisphinctidae family, known for its evolute shell with fine to strong ribbing and distinctive whorl patterns. These ammonites were free-swimming cephalopods that inhabited warm, shallow Jurassic seas, likely preying on smaller marine animals. Their intricate shell structures serve as important stratigraphic markers in Late Jurassic geology.
The fossil shown in the image is the exact specimen you will receive, photographed with a 1cm scale cube for size reference. Each piece is carefully selected and prepared, showcasing the natural detail and structure of this fascinating genus. A Certificate of Authenticity is included.
Key Details:
- Species: Idoceras planula
- Fossil Type: Ammonite (extinct marine cephalopod)
- Geological Period: Upper Kimmeridgian, Late Jurassic (~154–152 million years ago)
- Location Found: Madagascar
- Size: Refer to image with scale cube for full dimensions
- Authenticity: 100% Genuine – Certificate of Authenticity included
- Photo: The exact specimen shown will be sent
Scientific and Collector Importance: Idoceras fossils are important for stratigraphic correlation and palaeontological research. Their unique morphology and age make them appealing to fossil collectors, educators, and natural history enthusiasts. This specimen provides a beautiful and scientifically relevant snapshot of marine life in the Late Jurassic.
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
Fast & Secure Shipping – All items are securely packaged and shipped promptly for safe delivery.
Add a fascinating and finely preserved ammonite to your collection with this certified Idoceras planula fossil from Jurassic Madagascar.








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