Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Brissopsis lyrifera (apical system) Description Apical system: The madreporite expands far to the posterior, separating the terminal plates I and V (ethmolytic)Scale 2 mm. Author Schultz, Heinke JPG file - 133.47 kB - 884 x 1 320 pixels added on 2005-02-23852 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview