Figure 6

Evolutionary framework of the extant zebras Equus grevyi since the oldest common ancestor Equus simplicidens, and through the European Equus stenonis and the African Equus koobiforensis. The present figure aims to represent the dispersal of the genus Equus in the Old World by E. simplicidens at the beginning of the Pleistocene, and the origin of the extant zebras E. grevyi through the E. stenonis and E. koobiforensis lineage. Artwork O. Cirilli (map edited from row data of QGIS v.3.18.1 (https://www.qgis.org/it/site/), zebras in background edited from Nina Marie Photography (https://ninamarievisuals.com/)).