Fig. 1: Archaeological and palaeontological sites.

a Context of the study area in Africa. b Early Pleistocene (Thomas Quarry I–Unit L (ThI-L), Tighennif, El-Kherba, Ain Hanech, Mansourah and Ain Boucherit) and Plio-Pleistocene transition (Ahl al Oughlam, Ain Jourdel and Guefaït-4.2) sites of Morocco and Algeria. c Position of Guefaït-4.2 and other study area sites attributed to Early Pleistocene (Gara Soultana and Aïn Tabouda) and Middle Pleistocene (Oued Rabt).