Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Gracilechinus lucidus (ambulacral plates + apical disc) Description a. Ambulacral plates, b. Apical disc.a. Scale 4 mm, b. Scale 6 mm. Author Mortensen, Theodor JPG file - 79.48 kB - 848 x 404 pixels added on 2011-02-23238 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview