A new integrated search interface will become available in the next phase of marineinfo.org.For the time being, please use IMIS to search available data PeopleInstitutesProjectsData setsPublicationsEvents IMIS Photogallery » ReferencesStereocidaris alcocki (primary spines)Description Primary spines: The basal part of the shaft is formed of three keels, two laterally and one on the upper side. The underside is more or less ridged.Diameter of test 32 mm; longest spine 81 mm; Indian Ocean.ZMUCAuthor Schultz, HeinkeJPG file - 170.39 kB - 945 x 1 464 pixelsadded on 2011-02-23200 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de...© 2011 Schultz, HeinkeClick here to return to the thumbnails overview