Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Laganum depressum (aboral) Description Aboral side: A ringshaped depression is around the petaloid area.Test length 33 mm; Pangani, Tanzania. Author Schultz, Heinke JPG file - 144.02 kB - 904 x 1 074 pixels added on 2005-02-23449 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview