Description
These polished ammonite pairs measure between 80 – 90mm.
These ammonite fossils come from the Cretaceous Period, a geological era spanning approximately 145 to 66 million years ago. Madagascar is world-renowned for its exceptionally preserved ammonite deposits, formed within marine sedimentary environments that once lay beneath warm, shallow Cretaceous seas. The region’s fossil-rich limestone and marl layers provide excellent conditions for the preservation of both external shell structure and internal suture patterns.
The polished interiors of these specimens reveal mineralised chambers often filled with calcite, aragonite, or other naturally occurring mineral deposits, formed as the original organic material was replaced during the fossilisation process.
The image shows an example of the single specimen you will receive