Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Pseudechinus albocinctus (ambulacral plates) Description Ambulacral plates: The primary tubercles are much larger than the secondary tubercles.Scale 1 mm. Author Schultz, Heinke JPG file - 161.16 kB - 1 181 x 796 pixels added on 2005-02-23237 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview