Extended Data Fig. 3: Stone artefacts in Early Pleistocene deposits at Calio.

a, Overhead view of the Calio trench showing the locations of the stone artefacts and the dated fossil specimen (F1); b, 3D photogrammetry model of the trench (section A to B in panel a) with archaeological finds projected and sedimentary layers indicated (layers 1-5b) (Agisoft Metashape Professional was used to produce the 3D image and the finds were projected onto this model using ArcGIS Pro); c, The stratigraphically deepest stone artefact excavated from the site (Artefact 6), seen here exposed in layer 3b in the trench wall; d, Artefact 5; e, Artefact 2; f, Artefact 4; g, Artefact 1 exposed on the ground surface partially embedded in extremely hard fluvial sandstone comprising the capping conglomerate (layer 2).