Figure 6 from: Jahn R, Kusber W-H, Cocquyt C (2017) Differentiating Iconella from Surirella (Bacillariophyceae): typifying four Ehrenberg names and a preliminary checklist of the African taxa. PhytoKeys 82: 73-112. https://doi.org/10.3897/phytokeys.82.13542

Figure 6 - Iconella tchadensis. A–D Valves from the holotype slide BR 987 A–C valvar views showing the size range D girdle view. Scale bar = 10 µm.