Dinosaurology: The Search for a Lost World is the 12th main installment of the Ology series by Dugald A. Steer. It is set in 1907, when explorer Percy Fawcett and his assistant Rimes as they set out to find the mysterious lost island of Yannapalu, where they make a shocking discovery: Dinosaurs still live on Earth! Dinosaurology was released September 24th, 2013.