Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Plesiodiadema indicum (ambulacral plates) Description Ambulacral plates: At every third plate the horizontal suture is depressed in a pit. The primary tubercles are indistinct. The pore-pairs are relatively large.Scale 4 mm. Author Mortensen, Theodor JPG file - 59.51 kB - 405 x 794 pixels added on 2011-02-23194 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor Click here to return to the thumbnails overview