Data PolicyPublications | Institutes | Persons | Datasets | Projects | Maps IMIS Photogallery » References Diadema setosum (base of primary spine) Description Primary spine: The base of the spine is inflated.Scale 2 mm. Author Mortensen, Theodor JPG file - 47.56 kB - 497 x 819 pixels added on 2005-02-23593 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor Click here to return to the thumbnails overview