Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Peronella macroproctes (apical disc + periproct) Description Left: Apical disc. Right: Periproct: The plates are set with tubercles carrying tiny spines.Scale 2 mm. Author Mortensen, Theodor JPG file - 78.09 kB - 945 x 489 pixels added on 2009-02-23196 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Mortensen, Theodor Click here to return to the thumbnails overview