Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Zenocentrotus kellersi (ambulacral plates) Description Ambulacral plates at the peristome: The pore zone is widened. The interambulacrum expands along the very edge.Scale 1 mm. Author Mortensen, Theodor JPG file - 235.40 kB - 1 316 x 896 pixels added on 2005-02-23230 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor Click here to return to the thumbnails overview