Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Clypeaster prostratus (part of petal) Description Part of petal: The ridges between the pore-pairs are densely set with a row of primary tubercles.Scale 3 mm. Author Mortensen, Theodor JPG file - 205.11 kB - 857 x 1 018 pixels added on 2009-02-23535 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Mortensen, Theodor Click here to return to the thumbnails overview