Distribution of the 37 SigMA clusters in Sco-Cen, projected in Galactic coordinates. Traditionally, the Sco-Cen OB association is separated into US, UCL, and LCC, marked with gray dashed lines. The clusters extracted with SigMA reveal a more complex substructure of Sco-Cen than initially proposed by Blaauw (1946), and they show a more extended spatial distribution that includes the CrA, Pipe, and Cham regions and additional stellar clusters toward the northeast (NE). The clusters are ordered in the legend by region, as given in Table 3. See the interactive 2D version online or Fig. 11 for a separate view of each cluster. For a better visualization of the clusters’ distribution, see the interactive 3D version online (Fig. 12).