FIGURE 12 in The genus Clathria from the Gulf of Mexico and Mexican Caribbean, with redescription and resurrection of Clathria carteri (Poecilosclerida: Microcionidae)

FIGURE 12. SEM depiction of spicules from Clathria (Microciona) echinata (Alcolado, 1984): A. Main megascleres, thick style and smooth head. B. Uncommon strongylote. C-D. Auxiliary styles and detail of microspined and smooth heads. E. Cleistochelae, range from small to large. F. Palmate isochelae front and lateral view. G. Oxhorn toxa. Scale bars: A, B, 150 µm; C, 100 µm; D, 10 µm; E, F, 15 µm; G, 5 µm.