These shells were present in sediment of a ditch in the Naardermeer, an old peat bog area in the central part of the Netherlands (2016).
row 1 two shells of the nodosa group (322-323 µm) and two unidentified shells (270-278 µm).
row 2 species of the pyriformis - oblonga group (340-418 µm)
row 3 species of the pyriformis group (183-410 µm)
row 4 Difflugia acuminata group (255-400 µm)