Cretaceous ammonite fossil slice – polished madagascar ammonite pair – real fossil with colourful inner chambers & coa

Description

Step into the prehistoric seas of the Cretaceous period with this beautifully preserved and polished Ammonite Fossil, sourced directly from the fossil-rich deposits of Madagascar. These ancient marine creatures lived over 65 to 100 million years ago, leaving behind their iconic coiled shells which have fascinated collectors and scientists alike.

This particular ammonite has been sliced in half and expertly polished to reveal the internal chambered structure that once housed the soft body of the living animal. These chambers often become mineralised over millions of years, producing vibrant natural colours and patterns that are unique to each specimen.

Geological & Fossil Information:

• Specimen: Ammonite
• Age: Cretaceous (~100–66 million years ago)
• Location: Madagascar
• Finish: Sliced & polished to reveal internal chambers
• Scale Reference: 1cm cube – see photo for full sizing
• Authenticity: 100% Genuine – Certificate of Authenticity included

What Are Ammonites?

Ammonites were extinct marine molluscs belonging to the subclass Ammonoidea, part of the larger cephalopod group that also includes modern squids, octopuses, and cuttlefish. Despite their visual resemblance to snails, they are not closely related. Ammonites had coiled external shells divided into chambers. As they grew, the ammonite would move into a new chamber, sealing off the old one.

Ammonites were free-swimming predators, navigating ancient oceans using jet propulsion, much like their modern relatives. Their fossil record spans from the Devonian through to the end of the Cretaceous, when they became extinct during the same mass extinction event that wiped out the dinosaurs.

Why This Fossil is Special:

• Shows natural mineralisation and colourful internal chambers
• Beautifully polished for display, education, or collection
• Sourced from Madagascar, known for high-quality fossil preservation
• Comes with a Certificate of Authenticity
• Great gift or addition to any natural history, fossil, or gemstone collection
• Exact specimen shown – no surprises!

ACTUAL AS SEEN:

The photograph shows the exact item you will receive. Each fossil is carefully hand-selected and photographed to showcase its features. While we do our best to provide accurate dimensions, fossils are irregular in shape, and some variation may occur.

Please Note:

• Some fossils may be gently propped for photography purposes
• Colour appearance may vary depending on lighting conditions or device screens
• Once sold, the listing will be updated with a new specimen – each one is unique!

Own a genuine piece of Earth’s ancient oceans—this Madagascan ammonite fossil slice is a dazzling example of prehistoric beauty, preserved through time and ready to inspire.