ld diagram of the model of the supershell projected to the longitude-heliocentric distance plane (the black outline and the grey map, the intensity corresponds to the gas mass) together with positions of star clusters. Ages of clusters are colour-coded: < 5 Myr (blue), 5–10 Myr (cyan), 10–15 Myr (darker green, only 2 clusters in the image), 15–20 Myr (light green), 20–40 Myr (yellow), 40–120 Myr (red), and > 120 Myr (dark grey). Clusters most probably originating in the shell are denoted as large squares and their names are given, as well as names of some other young clusters.