Spicules image: a) Spicules in two categories: oxeas I, fusiform (two on the left); oxeas II, hastate (sometimes styles); b) ends of spicules. Sample from Islas del Rosario, Colombia (specimen INV POR1282). Photos and image composition by Jaime Andrés Silva (U. Nacional de Colombia, Bogotá campus). From Silva & Zea (2017, Fig. 7).
Tissue image: a), b) tangential view of the ectosome; c) perpendicular section (surface above). Sample from Islas del Rosario, Colombia (specimen INV POR1282). Photos and image composition by Jaime Andrés Silva (U. Nacional de Colombia, Bogotá campus). From Silva & Zea (2017, Fig. 7).