FIGURE 4 in The Genus Placospongia (Demospongiae: Clionaida) From The Colombian Caribbean

FIGURE 4. Placospongia cristata Boury-Esnault, 1973. A. Underwater photograph of an encrusting specimen (INV POR1430, approximate scale: 5 cm). B. Underwater photograph of MZUSUI:000170, an encrusting specimen with cylindrical lobules (approximate scale: 5 cm). C. Cross section of the tissue (scale: 300 µm). D. Tylostyle I (scale: 100 µm). E. Tylostyle I head and tip (scale: 20 µm). F. Tylostyle II (scale: 100 µm). G. Tylostyle II head and tip (scale: 20 µm). H. Selenaster (scale: 20 µm). I. Spheraster (scale: 20 µm). J. Microspherasters (scale: 3 µm).