Spicule dimensions of Siphonodictyon brevitubulatum Pang, 1973; sample no. YPM 8717 (holotype)

Substrate: Montastrea annularis; Sampled by R. Keeley and identified by R. K. Pang. All measurements are of mature, fully formed oxeas to allow statistical comparison with other samples. Measurements conducted by C. Schönberg on preparation of acid-cleaned spicules made by B. Calcinai. Data are sorted vertically by spicule width.; Pang, Rosemary K. (1973) The systematics of some Jamaican excavating sponges (Porifera). Postilla of the Peabody Museum of the Yale University 161: 1-75 (YPM 8717: pp. 56-58, Tab. 2). Carballo, José L.; Hepburn, Leanne; Nava, Héctor, H.; Cruz-Barraza, José A.; Bautista-Guerrero, E. (in press) Coral-boring Aka species (Porifera: Phloeodictyidae) from Mexico with description of Aka cryptica sp. nov. Journal of the Marine Biological Association of the United Kingdom.