Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Stylocidaris calacantha (apical system) Description Part of apical system: The tubercules on the inner edge of the genital plates are radially elongated.Scale 6 mm. Author Mortensen, Theodor JPG file - 83.12 kB - 709 x 470 pixels added on 2011-02-23191 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview