Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Gracilechinus alexandri (ambulacral + interambulacral plates) Description Ambulacral plates (left) and interambulacral plates (right).Scale 40 mm. Author Mortensen, Theodor JPG file - 99.27 kB - 511 x 709 pixels added on 2011-02-23525 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview