Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Paratrema doederleini (apical disc + ambulacral plates) Description Left: Apical disc. Right: Ambulacral plates.Left: Scale 1 mm; Right: Scale 2 mm. Author Mortensen, Theodor JPG file - 121.70 kB - 945 x 469 pixels added on 2011-02-23204 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview