Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Plesiodiadema antillarum (apical system) Description Apical system: Each terminal plate carries a larger tubercle in addition to the usual small uniform tubercles.Scale 3 mm. Author Mortensen, Theodor JPG file - 83.33 kB - 827 x 659 pixels added on 2011-02-23470 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview