Figures 40-47 from: Liu B, Williams DM (2020) From chaos to order: the life history of Hannaea inaequidentata (Lagerstedt) Genkal and Kharitonov (Bacillariophyta), from initial cells to vegetative cells. PhytoKeys 162: 81-112. https://doi.org/10.3897/phytokeys.162.56136

Figures 40-47 Hannaea inaequidentata, SEM40–43 frustule details showing open girdle bands, note row of poroids interrupted at centre (42 arrow; also see Fig. 46, arrow) 44 valve with complete valvocopula 45–47 details of Fig. 44 showing open valvocopula (45 arrow), sawtooth-shaped projections attached to valve, internally visible over each virga (46 arrows; also see Fig. 41, arrows). Scale bars: 10 μm (40, 44), 2 μm (41–43, 45–47).