Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Pericosmus keiensis (posterior petal + apical system) Description Pericosmus keiensis: b. distal end of left posterior petal, c. apical system.b. Scale 4 mm, c. Scale 2 mm. Author Mortensen, Theodor JPG file - 74.00 kB - 930 x 612 pixels added on 2009-02-23191 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Mortensen, Theodor Click here to return to the thumbnails overview