Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Peronella orbicularis (apical system) Description Apical system of the laganid Peronella orbicularis: Ocular plates with small pores incorporated into monobasal madreporite; four gonopores; hydropores scattered over the madreporite.Scale 2 mm. Author Schultz, Heinke JPG file - 42.63 kB - 472 x 508 pixels added on 2009-02-23192 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Schultz, Heinke Click here to return to the thumbnails overview