Fig. 1From: A basal phiomorph (Rodentia, Hystricognathi) from the late Eocene of the Fayum Depression, EgyptThe early Oligocene–late Eocene Jebel Qatrani area, Fayum Depression, northern Egypt, in unscaled schematic cross-section, showing stratigraphic positions and age estimates for major mammal-bearing fossil quarries, approximate position of Eocene–Oligocene boundary, following Seiffert (Seiffert 2006), and distribution of hystricognathous rodents in the Jebel Qatrani areaBack to article page