Map of East and Central Africa depicting the main present-day lakes and rivers, the tectonic structures of the Western and Eastern branches of the East African Rift System (dash-dotted lines) and the location of Palaeolake Waril (star), where the new fossil cichlid was found. The distribution of the present-day members of the Haplochromini in Lake Tanganyika (orange line), Lake Malawi and Victoria (green line), adjacent river systems and the Congo and Malagarasi Rivers is shown (green shading and lines). Source of map: River network drawn after Clabaut et al.  and Schwarzer et al. , distribution of haplochromine cichlids according to Schwarzer et al.