Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Holasteroida (apical system) Description Apical system. Author Schultz, Heinke JPG file - 35.71 kB - 472 x 792 pixels added on 2005-02-23717 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview