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The Swindon stegosaur

Palaeontologist Prof Paul Barrett points out the Museum’s Dacentrurus specimen, the first stegosaur specimen to be described, to science communicator Dr Nick Crumpton.

Find out how this unassuming fossil, walked past by thousands of visitors every day, can help modern day palaeontologists make sense of more recent fossil finds.

To hear more from Prof Barrett about stegosaurs and other prehistoric reptiles, listen to the dinosaur episode of BBC Radio 4 Natural Histories.