Biomass burning on the African continent is widespread and interactions with climate, vegetation dynamics and biogeochemical cycling are complex. To obtain a better understanding of these complex relationships, African fire history has been widely studied, although mostly on relatively short time-scales (i.e. yrs to kyrs) and less commonly on long-term scales. Here, we present a 192-kyr, continuous biomass-burning record from sub-Saharan Northwest Africa based on the fire biomarker levoglucosan in a marine sediment core offshore Guinea. Notable features of our record include an increase in levoglucosan accumulation at 80 ka and two peaks at 50-60 ka. The event at 80 ka is likely related to an overall increase in sedimentation rates rather than an increase in biomass burning in the Northwest African savanna region. Our record indicates that glacial/interglacial changes in regional climate and vegetation composition (C3 vs. C4 plants) were not a major influence on biomass burning over the last 192 kyrs. ... : Supplement to: Schreuder, Laura T; Hopmans, Ellen C; Castañeda, Isla S; Schefuß, Enno; Mulitza, Stefan; Sinninghe Damsté, Jaap S; Schouten, Stefan (2019): Late Quaternary biomass burning in Northwest Africa and interactions with climate, vegetation, and humans. Paleoceanography and Paleoclimatology, 34(2), 153-163 ...