Fragments of fossilised dinosaur brain found for the first time

A brown bit of rock picked up in the UK by a professional fossil hunter a decade ago is the first piece of fossilised dinosaur brain tissue ever to be found. The roughly 133-million-year-old tissue comes from a species of dinosaur known as Iguanodon, and comes from a brain that is similar in structure, although larger, to that of modern-day crocodiles and birds.