Coppermine. 1–3 Lindavia radiosa [L. antiqua PH] (6830, 6831) 4, 5 Lindavia antiqua (6830, 6831) 6 Lindavia michiganiana (6832) 7 Lindavia intermedia (6830) 8, 9 Staurosirella sp. [cf. S. pinnata] (6832) 10–13 Fragilaria spp. [cf. F. vaucheriae] [F. capucina PH] (6832, 6833) 14–17 Tabellaria flocculosa (6830, 6831, 6832) 18–20 Ulnaria sp. (6832) (all three images are of the same specimen; image 18 is at a different scale) 21–24 Tabellaria fenestrata [T. flocculosa var. linearis PH] (6828, 6830, 6831, 6832) 25 Diatoma tenuis (6832) 26–28 Fragilaria spp. [cf. F. capucina] (6832, 6833) 29, 30 Eucocconeis laevis (6826, 6830, 6833) 31, 32 Eucocconeis flexella (6827, 6831, 6833). Scale bars: 10 µm.