Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Irregularia (petals) Description On the upper side the pore-pairs in the ambulacra are concentrated in leaf-shaped densely packed bands. Author Schultz, Heinke JPG file - 322.47 kB - 1 141 x 1 168 pixels added on 2005-02-231 458 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview