Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Aspidodiadema meijerei (ambulacral plates + apical system) Description a. Ambital ambulacral plates, b. Part of apical system: The plates are uniformly tuberculated.Scale 4 mm. Author Mortensen, Theodor JPG file - 118.76 kB - 806 x 678 pixels added on 2011-02-23224 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview