FIGURES 7–11 in A new diatom (Surirellaceae: Bacillariophyta) species-Surirella caljoniana sp. nov.-in Göydün Spring, Sivas in Eastern Anatolia, Republic of Türkiye

FIGURES 7–11. Type material of Surirella caljoniana sp. nov. from Göydün Spring, Sivas, Türkiye, SEM, external view. 7. Entire valve. 8. Detail of the multiseriate striae and irregular fimbriate silica protrusions sometimes from the costae parallel to the apical axis. 9. Detail of the undulating axial area. 10. Detail of the foot pole showing the straight not enlarged terminal raphe endings. 11. Detail of the head pole showing the straight not enlarged terminal raphe endings. Scale bars: 10 µm (Fig. 7), 5 µm (Figs 8–11).