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 » ReferencesGracilechinus (apical disc)Description Typical apical system of Gracilechinus alexandri (left): The periproct is much larger than a single genital plate; Gracilechinus elegans (right): the periproct is only a little larger than a single genital plate.Scale 5 mm.Author Mortensen, TheodorJPG file - 89.20 kB - 926 x 466 pixelsadded on 2011-02-231 273 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de...© 2011 Mortensen, TheodorClick here to return to the thumbnails overview