Delphine Angst is a postdoctoral researcher at the University of Cape Town in South Africa. Her work currently focuses on the study of paleobiology and paleoecology of giant flightless birds through a multidisciplinary approach.Eric Buffetaut is Director of Research Emeritus at the National Center of Scientific Research (Geology Department of the Ecole Normale Supérieure, Paris). After working on crocodiles, dinosaurs and pterosaurs, he is now mainly interested in the paleobiology of extinct birds.