Othniel Charles Marsh
On July 28, 2016, Crichton's website and HarperCollins announced the publication of a third posthumous novel, titled "Dragon Teeth", which he had written in 1974. It is a historical novel set during the Bone Wars, and includes the real life characters of Othniel Charles Marsh and Edward Drinker Cope. The novel was released in May 2017.