Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Rhynobrissus tumulus (oral plating) Description Plate pattern of oral side. The interambulacra 1 and 4 (shaded) are excluded from the peristome. The labral plate (green) is very short.Scale 10 mm. Author McNamara, Kenneth J. JPG file - 74.16 kB - 709 x 855 pixels added on 2009-02-23218 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 McNamara, Kenneth J. Click here to return to the thumbnails overview