1–6 Muelleria gibbula (6955) 7, 8 Neidium bergii (6955) 9, 10 Neidium sp. cf. N. bisulcatum (6955) 11 Neidium sp. cf. Neidium boreale Foged (6955) 12–15Neidium kozlowii var. ellipticum (6955) 16–18 Neidium sp. (6955, 6957) 19 Neidiopsis binodiformis (6957) 20 Neidium fogedii (6955) 21 Neidium distinctepunctatum (6955) 22–24 Neidium bobmarshallensis (6955). Scale bar: 10 µm.