It may surprise some to learn that corals can also become fossils, but in fact the oldest fossil corals are some 450 million years old, from the Ordovican period. Corals are polyps (having a body sac) and a skelleton that can become fossilised, and may live as individulas or as a colony of many polyps, eventually forming a coral reef. They are some of the most beautiful and colourful of all marine creatures and make fascinating fossils for any collection!
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