RARE Calycoceras asiaticum Fossil Chalk Ammonite with Belemnite – Middle Cenomanian, Cretaceous – France – Alice Purnell Collection

Description

This listing offers a rare and scientifically significant fossil combination featuring a well-preserved Calycoceras asiaticum ammonite with an attached belemnite, from the Middle Cenomanian Stage of the Late Cretaceous, approximately 98 to 95 million years ago. This exceptional specimen was collected from the fossil-rich chalk deposits of Normandy, France, and is part of the prestigious Alice Purnell Collection, known for its museum-quality and thoroughly documented fossils.

Calycoceras asiaticum is a member of the Acanthoceratidae family and is characterised by strong ribbing, prominent tubercles, and an ornate, evolute shell. This species is a biostratigraphic marker for the Cenomanian and is highly sought after by both scientists and collectors.

Adding to its rarity, this fossil also includes an attached belemnite—an extinct group of marine cephalopods related to modern squid. Belemnites possessed internal bullet-shaped shells and were important mid-level predators in ancient marine ecosystems.

Geological Context: The Middle Cenomanian Stage is part of the early Late Cretaceous, a period marked by warm global climates and extensive marine transgressions. The chalk beds of Normandy are globally recognised for yielding exceptionally preserved ammonites, belemnites, and other marine invertebrates. These calcareous deposits formed in shallow seas and now serve as a key resource for understanding Cretaceous marine environments.

Key Details:

• Species: Calycoceras asiaticum with Belemnite
• Fossil Type: Marine cephalopods (ammonite and belemnite)
• Age: Middle Cenomanian, Late Cretaceous (~98–95 million years ago)
• Location Found: Normandy, France
• Provenance: From the Alice Purnell Collection
• Condition: Excellent preservation showing both ammonite detail and attached belemnite
• Authenticity: 100% genuine specimen, supplied with a Certificate of Authenticity
• Scale: Refer to 1cm cube in photo for full sizing
• Photo: The actual specimen shown is the one you will receive

Scientific & Collector Value: This fossil combination provides an exceptional window into ancient marine ecosystems, showcasing two co-occurring cephalopods from the Cretaceous seas of Europe. Its excellent preservation and provenance from the Alice Purnell Collection make it highly desirable for collectors, educators, and institutions.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Fast & Secure Shipping – Expertly packed and shipped promptly to ensure safe arrival.

Own a rare and visually stunning piece of natural history with this Calycoceras asiaticum ammonite fossil featuring an attached belemnite from the Cenomanian of Normandy, France.