FIGURE 38 in Calcareous sponges of the Western Indian Ocean and Red Sea

FIGURE 38. Leucaltis nodusgordii (Poléjaeff, 1883), ZMA Por. 16248, from the Seychelles, a–f, SEM images of the spicules, a, cortical giant tetractines, b, cortical giant triactines, c, choanosomal regular tetractine, d, choanosomal regular triactine, e, atrial sagittal 'abruptly' angled tetractine, f, atrial sagittal 'abruptly' angled triactine.