Figure 1 in The European spring snail genus Marstoniopsis (Gastropoda: Amnicolidae): Eastward extension likely driven by Pleistocene glaciations

Figure 1. Map showing the distribution area of Marstoniopsis (solid line). Details of numbered localities are given in Table 1. The dashed line shows the extent of the Riss-Saale-Dnieper glaciation, the dotted line – the Würm-Weichsel-Valdai glaciation (compiled after Ehlers and Gibbard 2004). Asterisks indicate the locations of Holocene fossil records (after Horsák et al. 2013).