Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Hesperocidaris perplexa (ambulacral plates) Description Part of ambulacrum.Scale 2 mm. Author Mortensen, Theodor JPG file - 78.29 kB - 945 x 464 pixels added on 2011-02-23183 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview