FIGURE 9. Xenospongia patelliformis Gray, 1858 in The most common sponges on the Great Barrier Reef seabed, Australia, include species new to science (Phylum Porifera)

FIGURE 9. Xenospongia patelliformis Gray, 1858 (QMG331025 (SBD513104)) A, Specimen (scale bar 5 mm) B, Margin of discoid sponge, showing long echinating styles protruding from the tangential ectosomal layer as well as from brushes perpendicular to the surface (scale bar 3 mm). C, Ectosome, displaying the high concentration of asters and arrangement surface brushes (scale bar 500 μm) D, Ectosome in cross section, with long style protruding from ectosomal bundles. Dense, tangential arrangement of styles and highly arenaceous choanosome are also visible (scale bar 1 mm). E, Large oxyaster (scale bar 15 μm). F, Strongylasters (scale bar 10 μm). G, Style (Type II) (scale bar 50 μm). H, Style (Type I) (scale bar 200 μm). I, Style head (Type II) (scale bar10 μm). J, Style tip (Type II) (scale bar 20 μm). K, Style (Type III)(scale bar 250 μm).