Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Pseudocentrotus depressus (oral ambulacral plates) Description Oral ambulacral plates: The oblique rows of pore-pairs are densely packed forming widened phyllodes.Scale 2 mm. Author Mortensen, Theodor JPG file - 207.28 kB - 945 x 891 pixels added on 2005-02-23308 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor Click here to return to the thumbnails overview