Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Rhopalocidaris rosea (apical system + spine) Description Left: Apical system. Right: Scrobicular spine.Left: Scale 4 mm; Right: Scale 500 µ. Author Mortensen, Theodor JPG file - 75.32 kB - 606 x 452 pixels added on 2011-02-23194 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview