Philip J. Currie is Curator of Dinosaurs at the Royal Tyrrell Museum of Palaeontology. He is co-editor (with Eva B. Koppelhus) of Feathered Dragons: Studies on the Transition from Dinosaurs to Birds (IUP, 2004). He lives in Drumheller, Alberta.Eva B. Koppelhus is an adjunct research scientist at the Royal Tyrrell Museum of Palaeontology. She lives in Drumheller, Alberta.