Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Strongylocentrotus franciscanus (test, aboral) Description Aboral side: The primary tubercles are distinctly larger than the secondaries.Diameter 132 mm; California, USA. Author Schultz, Heinke JPG file - 238.78 kB - 1 161 x 1 151 pixels added on 2005-02-23274 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview