Description
- Species: Desmoceras sp or Cleoniceras sp
- Age: Cretaceous, 100 Million Years Old
- Source: Madagascar
- Size: Approx 60mm
- Exact item pictured
Ammonites are some of the most recognisable fossils, instantly identifiable by their iconic spiral shells. While their shape may remind you of a snail, ammonites were not closely related to them. These marine animals lived between 240 – 65 million years ago and had a coiled, segmented shell similar to the modern nautilus. As molluscs, ammonites are more closely related to living cephalopods, including octopus, squid, and cuttlefish.
Madagascar is famous for its beautifully preserved ammonite fossils, many of which date back to the Cretaceous period. These ancient marine cephalopods swam in the warm waters of the Tethys Ocean, ranging in size from small coins to large shells several inches across. Madagascan ammonites are prized by fossil collectors and paleontologists alike, not only for their scientific value but also for their vibrant coloration, intricate patterns, and the polished finish they often receive.
These iridescent ammonites are polished to reveal stunning flashes of colour across the shell, which can include red, orange, green, blue, and purple. This spectacular effect is caused by layers of aragonite, the same mineral found in mother-of-pearl, giving the shell a shimmering, opalescent quality. Each specimen is unique, making every ammonite a one-of-a-kind.
