Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Aeropsis rostrata (apical system) Description Apical system: The number of gonopores vary from two to four.Scale 3 mm. Author Mortensen, Theodor JPG file - 70.97 kB - 591 x 729 pixels added on 2009-02-23779 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Mortensen, Theodor Click here to return to the thumbnails overview