Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Psammechinus miliaris (ambulacral plates) Description Ambulacral plates: The pore.pairs are developed in arcs of three.Scale 2 mm. Author Mortensen, Theodor JPG file - 127.47 kB - 761 x 785 pixels added on 2005-02-23919 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor Click here to return to the thumbnails overview