Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Sarsiaster griegii (apical system) Description The apical system is ethmolytic with two gonopores.Scale 2 mm. Author Mortensen, Theodor JPG file - 28.29 kB - 472 x 377 pixels added on 2009-02-23214 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Mortensen, Theodor Click here to return to the thumbnails overview