Abstract
A recently discovered rock art site has revealed the presence of figures of fan palm (Borassus aethiopum), a species not recorded in the current flora of the Ennedi. Various evidences (style, superimpositions, themes represented, location in height, traces of erosion) make it possible to date them from the mid-Holocene and to attribute them to the earliest phases of the regional rock art. It is likely that the depictions of the fan palms were motivated by their importance for the population (food, medicine, construction). These data also make it possible to postulate that the northern limit of the distribution area of Borassus aethiopum in the Holocene was close to the Tropic of Cancer.
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