Ammonite, Perisphinctes, 6 cm and 410 grams

What are ammonites?

Ammonites were a group of molluscs living in the sea that included today's squid. Nowadays, these animals have their shell inside but the Ammonites still had their shell outside the body, just like snails. This Perisphinctes ammonite lived in the Late Jurassic period and is between 163 to 145 million years old and completely fossilised.

Fossilised ammonite from Madagascar

Many of the most beautiful ammonites are found in Madagascar. This island state is rich in fossils and offers a wealth of information about life on earth millions of years ago. Unfortunately, like dinosaurs, ammonites died out about 65 million years ago.