Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Tetrapygus niger (oral) Description Oral side: The spines show glassy distal "caps". There are numerous tube feet in the widened pore zones.Diameter of test 52 mm, Caldera, Chile. Author Schultz, Heinke JPG file - 242.81 kB - 1 153 x 1 098 pixels added on 2005-02-23293 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview