FIGURE 1. Locality map of Dubrovino site and similar-age late Pleistocene deposits from the West Siberian Plain. 1, Dubrovino; 2, Tyurseda-Khadyta; 3, Kul’egan-2247; 4, Bun’kovo; 5, Kalistratikha; 6, Novaya Surtaika.
FIGURE 2. Stratigraphic diagram of the Dubrovino section on the Ob River.
FIGURE 3. Subfossil beetle fragments from the Dubrovino assemblage; pronotum (1-4, 6, 10-12), head (5), and elytron (7-9, 13-15). 1, Elaphrus cf. riparius (Linnaeus, 1758); 2, Pogonus punctulatus Dejean, 1828; 3, Pterostichus cf. brevicornis (Kirby, 1837); 4, Cymindis cf. arctica Kryzhanovskij et Emetz, 1979; 5, Aphodius multiplex Reitter, 1867; 6, Cymbiodyta marginella (Fabricius, 1792); 7, Trechus cf. compactulus Belousov et Kabak, 1996; 8, Bembidion dauricum (Motschulsky, 1844); 9, Olisthopus sturmii (Duftschmid, 1812); 10, Pterostichus macer (Marsham, 1802); 11, P. mirus (Tschitschérine, 1894); 12, Amara aurichalcea Germar, 1823; 13, Porcinolus murinus (Fabricius, 1794); 14, Morychus ostasiaticus Tshernyshev, 1997; 15, Poecilus cf. ravus (Lutshnik, 1922). Scale bars are 1 mm increments. Figure parts 1-9 and 10-15 correspond to upper and the bottom scale bars, respectively.
FIGURE 4. Subfossil beetle fragments from the Dubrovino assemblage; elytra (1-2, 7, 11, 13, 17), pronotum (3-4, 6, 8, 15), head (5, 9, 14, 16), and rostrum (10, 12). 1, Otiorhynchus altaicus Stierlin, 1861; 2-3, O. obscurus Gyllenhal in Schoenherr, 1834; 4, O. pullus Gyllenhal in Schoenherr, 1834; 5-6, O. politus Gyllenhal in Schoenherr, 1834; 7, O. beatus Faust, 1890; 8, Stephanocleonus eruditus Faust, 1890; 9, S. isochromus Suvorov, 1912; 10, S. favens Faust, 1884; 11, Pissodes insignatus Boheman in Schoenherr, 1843; 12, Trichalophus biguttatus (Gebler, 1832); 13, Tychius albolineatus Motschulsky, 1860; 14, Phyllobius femoralis Boheman in Schoenherr, 1842; 15, Metadonus distinguendus (Boheman in Schoenherr, 1842); 16, Notaris aethiops (Paykull, 1792); 17, Tournotaris bimaculata (Fabricius, 1787). Scale bars are 1 mm increments.
FIGURE 5. Late Pleistocene and modern ranges of Stephanocleonus favens Faust, 1884.
FIGURE 6. Late Pleistocene and modern ranges of Stephanocleonus isochromus Suvorov, 1912.
FIGURE 7. Late Pleistocene and modern ranges of Otiorhynchus janovskii Korotyaev, 1990.
