Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Rhopalocidaris gracilis (oral) Description Oral side: The oral primary spines are smooth.Diameter of test 19 mm; Misaki, Japan.ZMUC Author Schultz, Heinke JPG file - 171.75 kB - 922 x 971 pixels added on 2011-02-23182 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Schultz, Heinke Click here to return to the thumbnails overview