FIGURES 10–13 in A revision of the diatom genus Lyrella Karayeva (Bacillariophyta: Lyrellaceae) from the Black Sea, with descriptions of five new species

FIGURES 10–13: Lyrella abruptapontica sp. nov. SEM images. Fig. 10: Internal view, scale bar = 20 µm. Fig. 11: Internal view, scale bar = 10 µm. Fig. 12: Internal view, scale bar = 9 µm. Fig. 13: External view, note the raphe external central and apical endings, the areolae and the lateral areas. Specimens from the Black Sea (Karadag, Dvujakornaya Bay, Sevastopol Bay).