Dana J. Ehret; Bruce J. Macfadden; Douglas S. Jones; Thomas J. Devries; David A. Foster; Rodolfo Salas-Gismondi. Origin of the white shark Carcharodon (Lamniformes: Lamnidae) based on recalibration of the Upper Neogene Pisco Formation of Peru. Palaeontology. 2012, 55 (6): 1139–1153. doi:10.1111/j.1475-4983.2012.01201.x.