During the Last Glacial Maximum (LGM), very specific but rare osseous decorated artifacts were produced using the "pseudo-excise" technique. These artifacts present a large geographical distribution, extending at least from the Aquitaine basin to Asturias. While in France a Badegoulian age is traditionally accepted for the "pseudo-excise" technique, this is mostly based on arguable data from old excavations and/or problematic archaeostratigraphic contexts. Since it is a key-site for this matter we have focused our attention on Pégourié Cave (Lot, France) in order to establish the chronocultural attribution of pseudo-excised pieces in southwest France. The interdisciplinary reassessment of the lithic and osseous industries from Layer 8 and 9, including inter-layer refittings, has shown (1) the irrelevance of previous stratigraphic subdivisions and (2) the strong cultural heterogeneity of this assemblage, which combines Azilian, Magdalenian, Badegoulian, Solutrean and Gravettian components. At the same time, a broad 14C program based on the direct dating of specific bone and antler technical wastes and tools—including a pseudo-excised point—was implemented after 3D recording using photogrammetry. The results obtained have allowed us to establish a new, firm confirmation of the Badegoulian age of pseudo-excised decoration and, in doing so, to more precisely define the time-range of this specific feature’s trans-regional dissemination. Finally, by comparing the results with recent data notably obtained at Llonín cave (Asturias, Spain), new light has been shed on the cultural geography of southwestern Europe during the LGM, allowing us to discuss and fuel the still-controversial "Iberian Badegoulian" hypothesis.