Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Goniocidaris (Petalocidaris) spinosa (ambulacral plates + apical system) Description Left: Ambulacral plates. Right: Part of apical system.Left: Scale 1 mm; Right: Scale 3 mm. Author Mortensen, Theodor JPG file - 64.77 kB - 964 x 291 pixels added on 2011-02-23174 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview