Coppermine. 1–4 Cymbopleura heilprinensis (6828, 6829, 6831, 6833) 5–8 Cymbella designata [syn. Cymbopleura citriformis] (6829, 6830, 6831) 9 Cymbopleura tynnii (6828, 6831) 10 Cymbopleura apiculata (6832) 11 Cymbopleura lata (6830) 12, 13 Cymbopleura austriaca (6824). Scale bars: 10 µm.