Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Ambulacral plates of Strongylocentrotus franciscanus Description Strongylocentrotus franciscanus: Near the apical system there are 7 - 9 pore-pairs per arc.Scale 4 mm. Author Mortensen, Theodor JPG file - 190.00 kB - 945 x 1 578 pixels added on 2005-02-23260 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor Click here to return to the thumbnails overview