A collection of hundreds of fossil specimens, including some gathered by Darwin on his travels, have been discovered after 165 years hidden in an old cabinet.

The 314 slides were found by Dr. Howard Falcon-Lang from the Department of Earth Sciences at Royal Holloway at the British Geological Survey. The professor says in a release: "While searching through an old cabinet, I spotted some drawers marked 'unregistered fossil plants'. I can't resist a mystery, so I pulled one open. What I found inside made my jaw drop!"

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