Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Centrostephanus longispinus (apical system) Description Part of apical system: The terminal plates are separated from the genital plates by several periproctal plates.Scale 1 mm. Author Mortensen, Theodor JPG file - 158.00 kB - 1 181 x 768 pixels added on 2005-02-23528 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor Click here to return to the thumbnails overview