Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Clypeaster rotundus (part of petal) Description Part of petal: The ridges between the pore-pairs are set with a dense series of primary tubercles.Scale 2 mm. Author Mortensen, Theodor JPG file - 156.79 kB - 709 x 644 pixels added on 2009-02-23592 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Mortensen, Theodor Click here to return to the thumbnails overview