FIGURES 60–65 in The diatom genus Ctenophora: A discussion on its morphology, relationships, and some species

FIGURES 60–65: SEM micrographs. Figs 60, 61, Fragilaria sp., external and internal view of plain central area; Fig. 62, Tabulariopsis australis (M. Perag.) D.M.Williams (1988: 249), detail of central area; Figs 63, 64, Hannaea baicalensis Genkal et al. (2008: 322), detail of central area, Fig. 63, external view, Fig. 64, internal view, with robust buttressed area; Fig. 65, Fragilaria sp. (Lake Baikal), whole valve, external view of plain central area. Scale = 1μm (Figs 60, 61), Scale = 2μm (Fig. 64), Scale = 3μm (Fig. 62), Scale = 5μm (Fig. 63, 65).