The Staja–Falsipyrgula species complex of the Kolankaya I fauna. A–C. Falsipyrgula ? coronata sp. nov., holotype, RGM 1310837, sample 2. D–F, T. F. ? coronata sp. nov., SNSB-BSPG 2023 XII 18, sample 2. G, H. Falsipyrgula cf. sieversi (Boettger, 1881), RGM 1310376, sample 2. I. F. ? coronata sp. nov., SNSB-BSPG 2023 XII 19, sample 3. J–L. F. ? coronata sp. nov., RGM 962611, sample 2. M–O, U. F. cf. sieversi, RGM 962610, sample 2. P–R. F. cf. sieversi, SNSB-BSPG 2023 XII 20, sample 2. S. F. ? coronata sp. nov., RGM 1310377, sample 2. Scale bars: 1 mm (A–R); 100 μm (S–U).