Fossilised ammonite shell

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Info. Fossilised ammonite shell

Today, we’re looking at the fossil of an ammonite shell. Ammonites were cephalopods that first appeared in the seas about 400 million years ago. The fossilised remains of these ocean-dwelling molluscs were given the name “snakestones” in England because they were thought to resemble coiled-up snakes. They died out about 66 million years ago, when they became extinct along with dinosaurs. Fossils of them are found all around the world – scientists have identified more than 10,000 ammonite species.