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 » ReferencesHemiaster expergitus (apical system)Description The apical system is ethmophract: The posterior genital plates and the posterior ocular plates join each other.Specimen of 37 mm length.Author Mortensen, TheodorJPG file - 23.16 kB - 406 x 451 pixelsadded on 2009-02-23593 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d...© 2009 Mortensen, TheodorClick here to return to the thumbnails overview