Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Echinostrephus molaris (apical) Description Apical system: The plates are naked, and an anal tube is developed in the centre.Scales 1 mm. Author Mortensen, Theodor JPG file - 78.14 kB - 689 x 650 pixels added on 2005-02-23277 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor Click here to return to the thumbnails overview