Being dead has rarely been a barrier to publication, as long as the author in question is sufficiently famous. Consequently, out in May is Dragon’s Teeth, a new dinosaur novel by Michael – Jurassic Park – Crichton, found by his wife Sherri among his files. The book isn’t, however, a return to the world of genetically reconstructed dinosaurs, but a historical novel based on the real life rivalry between dinosaur fossil hunters Edward Drinker Cope and Othniel Charles Marsh in 19th-century America. Dragon’s Teeth will be published by Harper, a division of HarperCollins, on 23 May.