Clearwater. 1 Craticula cuspidata (6277) 2 Neidium amphigomphus (6276) 3 Neidium sp. (6277) 4 Neidium sp. (6276) 5 Neidium ampliatum [cf. N. affine PH] (6277) 6 Neidium bisulcatum (6279) 7 Sellaphora sp. (6279) 8 Luticola mutica (6281) 9 Boreozonacola olympica (6277) 10 Sellaphora (?) sp. (6281) 11 Cavinula pseudoscutiformis (6278) 12 Adlafia minuscula? (6277) 13–15 Craticula buderi (6280) 16 Sellaphora rectangularis (6277) 17 Placoneis explanata (6277) 18, 19 Placoneis elginensis (6277). Scale bar: 10 µm.