Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Palaeobrissus hilgardi (adapical area) Description Adapical area: There is a double row of ambulacral plates adapically.Scale 5 mm. Author Mortensen, Theodor JPG file - 108.28 kB - 827 x 844 pixels added on 2009-02-23415 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Mortensen, Theodor Click here to return to the thumbnails overview