German museum to return rare Irritator dinosaur skull to Brazil

It is a 113-million-year-old bone of contention. After Stuttgart’s museum of natural history bought a fossilised dinosaur skull in 1991, researchers found it was the most complete spinosaurid skull known to date, belonging to a previously unknown genus of the huge meat-eating dinosaurs. Palaeontologists studying the skull in 1996 dubbed the genus Irritator – reflecting the annoyance they felt when they discovered the snout had been tinkered with – and the particular species challengeri , after …