Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Cidaris nuda (aboral) Description Aboral side: It is not the number of secondary spines that gives the echinoid a naked appearance but the small size of the secondary spines.Diameter of test 28 mm; Cape Verde Is.ZMUC Author Schultz, Heinke JPG file - 293.81 kB - 1 260 x 945 pixels added on 2011-02-23230 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Schultz, Heinke Click here to return to the thumbnails overview