FIGURE 9 in New species of Crella (Pytheas) Topsent, 1890 and Crellomima Rezvoi, 1925 (Crellidae, Poecilosclerida, Demospongiae) from Chilean shallow and Argentinean deep waters, with a synthesis on the known phylogenetic relationships of crellid sponges

FIGURE 9. Crellomima sigmatifera Fernandez, Gastaldi & Hajdu, sp. nov.: skeleton (A–F) and spicules (G–N, in SEM) of the holotype―IZUA-POR 172. A, transverse section. B, tornotes in vertical arrangement at the subectosomal region. C, tornotes in bouquets at the ectosomal region. C, ectosomal layer of ectosomal acanthostyles. D, detail of the ectosomal layer with ectosomal acanthostyles. E, choanosomal reticulation of choanosomal acanthostyles I equinated by choanosomal acanthostyles II. F, choanosomal acanthostyles I and II echinating a basal plate of spongin, which covers debris. G, tornotes. H, extremities of the tornotes. I, choanosomal acanthostyles I. J, choanosomal acanthostyle II. K, ectosomal acanthostyles. L, anchorate isochelae I. M, anchorate isochelae II. N, sigmas. Scale bars: A = 500 µm; B–D = 50 µm; E = 250 µm; F = 100 µm; G = 50 µm; H = 5 µm; I–J = 50 µm; K–L = 25 µm; M = 5 µm; N = 25 µm.