This listing features a genuine Sigaloceras calloviense fossil ammonite, excavated from the Kellaways Rock Formation, dating to the Lower Callovian stage of the Jurassic Period. Discovered at Freshwater Road, Ashton Keynes, in the United Kingdom, this ammonite offers an exceptional glimpse into marine life from approximately 164 million years ago.

Sigaloceras calloviense is a beautifully coiled ammonite species, recognized for its distinct ribbed shell and intricate suture patterns. This specimen is a testament to the remarkable biodiversity of the Jurassic seas and remains a significant piece for collectors, educators, and natural history enthusiasts.

Fossil Information:

• Species: Sigaloceras calloviense (Ammonite)
• Fossil Type: Whole ammonite
• Geological Formation: Kellaways Rock
• Age: ~164 million years old (Lower Callovian, Jurassic)
• Location: Freshwater Road, Ashton Keynes, United Kingdom
• Size: See scale in provided photos (Scale Rule Squares/Cube = 1cm)
• Preservation: Excellent natural preservation with visible ribbing and suture details

Key Features:

✔ Authentic Jurassic ammonite fossil

✔ From the notable Kellaways Rock Formation

✔ Distinct suture patterns and ribbing

✔ Ideal for collectors, museum displays, and educational purposes

✔ Part of the renowned Alice Purnell Collection

Authenticity & Certification:

All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity (COA). The photos show the exact specimen you will receive, ensuring transparency and trust in your purchase.

Why Buy From Us?

This fossil originates from the Alice Purnell Collection, one of the most comprehensive and respected fossil collections in the world. We specialize in high-quality, museum-grade fossils, offering pieces perfect for serious collectors, educators, and researchers.

Own a captivating piece of Earth's history—add this stunning Sigaloceras calloviense fossil ammonite to your collection today!