Mourer-Chauvire 2002. Revision of the Cathartidae (Aves: Ciconiiformes) from the Middle Eocene to the Upper Oligocene Phosphorites du Quercy, France. Proceedings of the 5th Symposium of the Society of Avian Paleontology and Evolution, Beijing, 1-4 June 2000., Science Press, Beijing, 2002: i-ii, i-viii, 1-311. Chapter pagination: 97-111