FIG. 13 in Small naviculoid species of Kobayasiella Lange-Bertalot, Adlafia Moser, Lange-Bertalot & Metzeltin, Nupela Vyverman & Compère and Sellaphora Mereschowsky from Tursujuq National Park, Hudson Bay region, Nunavik, Québec

FIG. 13. — SEM images of Adlafia ossiformis sp. nov.: A, external view of the complete valve; B, internal view of the complete valve; C, external view of the central area showing small proximal raphe fissures and multiseriate poroid covers over the areolae; D, internal view of the central area with curved fissures and a ghostareolae depression; E, magnification of the central area; F, magnification of areolae with recessed poroid volae; G, external view of the apex. Fissure bent down onto the mantle; H, internal view of the apex. The central nodule is elevated and an isolated pore (arrow) may be present. Scale bars: A, B, 5 µm; C, G, 2 µm; D, H, 3 µm; E, 1 µm; F, 300 nm.