Description
Holcophylloceras (Holcophylloceras) mediterraneum Fossil Ammonite – Callovian, Jurassic – Sakatara, Madagascar
About the Fossil:
This stunningly preserved Holcophylloceras (Holcophylloceras) mediterraneum ammonite fossil originates from the Callovian stage of the Middle Jurassic (~166-163 million years ago) and was discovered in Sakatara, Madagascar. Holcophylloceras is a genus of phylloceratid ammonites, known for their smooth, involute shells with prominent, complex suture patterns, making them a fascinating species within the ammonite lineage.
During the Middle Jurassic, ammonites like Holcophylloceras mediterraneum thrived in warm, shallow marine environments, where they played a crucial role in prehistoric marine food chains. Unlike many other ammonites, phylloceratids are believed to be deep-water cephalopods, exhibiting more hydrodynamic shell structures that enabled more efficient movement through the water. The Callovian-aged deposits of Madagascar are famous for yielding exquisitely preserved ammonites, offering valuable insight into the paleobiology of Jurassic seas.
Geology & Formation:
- Geological Age: Callovian, Middle Jurassic (~166-163 million years ago)
- Formation: Marine sedimentary deposits
- Location: Sakatara, Madagascar
- Preservation: Excellent fossilization with detailed suture patterns, smooth shell morphology, and original chamber structures
Why This Fossil?
✔ 100% Genuine Specimen – Comes with a Certificate of Authenticity
✔ Rare & Highly Collectible – A beautifully preserved specimen from the Alice Purnell Collection
✔ Perfect for Display or Study – Ideal for fossil collectors, students, and paleontology enthusiasts
✔ Scale Rule/Cube = 1cm – See photos for full sizing
The fossil in the photo is the exact specimen you will receive!
📦 Secure Packaging & Fast Shipping – Your fossil will be carefully packed for a safe journey!
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