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IMIS Photogallery » Echinodermata (echinoderms) » Echinoidea (sea urchins)
Anthocidaris crassispina (apical system)
Anthocidaris crassispina (apical system)
Description Apical system: The periproctal membrane is not totally covered by the plates. There are stem-like structures around the anal opening.
Scale 2 mm.
Author Mortensen, Theodor JPG file - 122.06 kB - 821 x 833 pixels added on 2005-02-23276 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor
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