Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Gracilechinus affinis (ambulacral plates) Description Ambulacral plates: The primary tubercles are very irregular in size.Scale 4 mm. Author Mortensen, Theodor JPG file - 71.33 kB - 472 x 575 pixels added on 2011-02-23489 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview