Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Stylocidaris tiara (ambulacral plates + apical system) Description a. Part of ambulacrum, b. Apical system.a. Scale 2 mm, b. Scale 4 mm. Author Mortensen, Theodor JPG file - 90.56 kB - 1 098 x 463 pixels added on 2011-02-23176 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview