When fossils were discovered in the US during the 19th Century, it altered American understandings of science, religion, race and more. So what was the Hadrosaurus Foulkii, and why did it have such an enormous effect?

Caroline Winterer, William Robertson Coe Professor of History and American Studies at Stanford University, joins Don for this episode. Caroline's book on this topic is 'How the New World Became Old: The Deep Time Revolution in America'.

Produced by Sophie Gee. Edited by Nick Thomson. Senior Producer was Charlotte Long.

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American History Hit is a History Hit podcast.