Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Stylocidaris laevispina (ambulacral plates + apical system) Description Left: Ambulacral plates. Right: Part of apical system: The genital plates are set with a distinct series of elongated tubercles along the inner edge.Left: Scale 2 mm. Right: Scale 5 mm. Author Mortensen, Theodor JPG file - 123.30 kB - 1 249 x 421 pixels added on 2011-02-23233 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview