FIGURE 12 in The most common sponges on the Great Barrier Reef seabed, Australia, include species new to science (Phylum Porifera)

FIGURE 12. Paracornulum fistulosum sp. nov. (QMG 329109 (SBD 504571 )). A, Multispicular tracts forming plumoreticulation throughout the choanosome (scale bar 300 μm). B, View of spicule arrangement at the ectosome (scale bar 300 μm). C, Acanthostyles echinating the basal skeleton coating biogenic substratum with evidence of bioerosion (scale bar 500 μm). D, Holotype (scale bar 3 cm). E, Tylote (Type I) with smooth tips (scale bar 100 μm). F, Acanthostyle (scale bar 25 μm). G, Tylote (Type II), heavily spined at both ends (scale bar 50 μm). H, Tylote (Type II) (scale bar 100 μm). I, Tylote (Type II) head, showing detailed spination (scale bar 5 μm)