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Dedicated to the publications of the Q11 symposium held in Orléans in 2018, it first takes us to the Bao Bolon Valley in Senegal for a paleoenvironmental study of the second half of the Holocene (Stern et al., 2019). Back in France, in the Somme Valley, paleontological and geochronological data allow a reinterpretation of the archaeological site of Menchecourt (Bahain et al., 2019). Which large animals lived in the vicinity of the Neandertal occupations of the Ramandils cave (Port-la-Nouvelle, Aude, France)? Rush et al. (2019) study their assemblages to reconstruct the palaeoenvironmental and paleoclimatic framework during the Late Pleistocene.Cover of Quaternaire, Volume 30 Issue 2Two articles are devoted to the region of Orleans which hosted the Q11 symposium. Coussot et al. (2019) describe the chronostratigraphy of the filling of a palaeovallon by silt in the context of the Beauceron plateau at Courville-sur-Eure (Eure-et-Loir, France), which extends from the second half of the Middle Pleistocene to the Holocene. From a sedimentary filling section at the prehistoric site of La Roche-Cotard IV (Indre-et-Loire, France), Marquet et al. (2019) conclude that the parietal productions with a symbolic character of the cave are very probably the work of the Neanderthal Man.Finally, Armynot of Châtelet et al. (2019) have characterized foraminifers to reconstruct the environment of the Merovingian and Carolingian emporium of Quentovic, in the mouth of the Canche (France).You can read a more detailed introduction of this issue and the Q11 colloquium in the foreword (Tissoux and Jacob, 2019).