Description
This listing features a genuine Cretaceous ammonite fossil half, beautifully sliced and polished to reveal the colourful and intricate internal chambers of this ancient marine animal. This single half originates from the fossil-rich region of Madagascar and is estimated to be around 100 to 145 million years old.
Ammonites are among the most iconic and widely collected fossils due to their distinctive spiral shell structure. Though they resemble snail shells in shape, ammonites were actually cephalopods—closely related to modern squid, octopuses, and cuttlefish. They used their coiled shells for buoyancy control in ancient marine environments.
The interior of this ammonite half showcases a range of natural mineral colours and patterns, with each chamber having undergone mineralisation during the fossilisation process. These features make each piece completely unique and perfect for display.
Geological Context: Madagascar is known for its exceptional preservation of marine fossils, and this ammonite is no exception. The fossil was formed in Cretaceous-aged marine sediments, deposited in warm shallow seas that once covered the region. Over millions of years, mineral-rich groundwater replaced the original organic material, preserving the shell in stunning detail.
Key Details:
- Specimen: Single Sliced Ammonite Half
- Fossil Type: Ammonite (extinct marine cephalopod)
- Age: Cretaceous Period (~100–145 million years ago)
- Location Found: Madagascar
- Condition: Sliced and polished to reveal internal chamber structure
- Authenticity: 100% genuine fossil, supplied with a Certificate of Authenticity
- Scale: See 1cm cube in the image for accurate sizing
- Photo: The exact specimen shown is what you will receive
- Note: Some fossils may be propped up for photography purposes
ACTUAL AS SEEN: This ammonite has been hand-selected for quality and visual appeal. Every effort has been made to provide accurate measurements, though natural irregularities can affect exact sizing. Colour may vary slightly due to lighting and device display. Once sold, this listing will be updated with a new specimen.
Listing Notes:
- Photo will change when a new specimen is uploaded.
- Basket images may update if item sells before checkout.
- We recommend saving or screenshotting your image at the time of purchase for reference.
Scientific & Decorative Value: Sliced ammonite halves like this one offer a visually stunning way to appreciate ancient marine life. They are ideal for fossil collectors, natural history enthusiasts, students, and anyone interested in Earth’s deep past. The intricate geometry and natural colouring of the chambers make this an excellent gift or display piece.
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
Fast & Secure Shipping – Professionally packed for safe and prompt delivery.
Add a piece of ancient oceanic history to your collection with this authentic Cretaceous ammonite fossil half from Madagascar.
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