<p>The lithostratigraphic and structural analysis of the Errachidia–Boudenib Basin, situated along the southern edge of the Central High Atlas in southeastern Morocco, was conducted through detailed field sections and stratigraphic correlation diagrams along an East–West transect. This multidisciplinary approach enabled the identification of significant lateral variations in facies and thicknesses within the Cretaceous deposits, revealing that the basin’s architecture was directly controlled by syn-sedimentary tectonics rather than simple subsidence. Our results demonstrate that the basin is segmented into two distinct sub-basins by the Goulmima Paleo-high, a structural threshold inherited from the Jurassic and reactivated during the Cretaceous. The correlations show that this paleo-high acted as a barrier, controlling the distribution of the Infra-Cenomanian continental deposits (Ifezouane and Aoufous Formations) and the extent of the Cenomanian–Turonian marine transgression (Akrabou Formation). In terms of geodynamics, we propose a revised model that goes beyond the traditional two-phase evolution (Triassic–Jurassic extension Vs. Cenozoic compression). We suggest that the basin’s evolution was driven by the complex interaction between transtensional reactivation associated with the anticlockwise rotation of the African Plate and early compressional events (inversion) that began as early as the Cretaceous. This integrated model provides new insights into the tectono-sedimentary development of the Pre-African Trough, enhancing our understanding of how inherited basement structures influence foreland basin formation in North African orogenic systems.</p>