Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Allocentrotus fragilis (ambulacral plates) Description Ambulacral plates: The pore-pairs occur in oblique rows.Scale 2 mm. Author Mortensen, Theodor JPG file - 159.70 kB - 945 x 1 007 pixels added on 2005-02-23289 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor Click here to return to the thumbnails overview