FIG. 12 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. 12. — SEM images of Adlafia umiujaqensis sp. nov.: A, B, external views of the complete valve; C, external view of the central area showing the multiseriate poroid covers over the areolae; D, external view of the apex with a curved fissure onto the mantle. A curved ridge follows the fissure; E, F, internal views of the valve. Proximal fissures bent to one side and terminal fissures small and elevated. The central nodule is elevated and an isolated pore (arrow) may be present. Scale bars: A, B, 4 µm; C, D, 1 µm; E, F, 3 µm.