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IMIS Photogallery » Echinodermata (echinoderms) » Echinoidea (sea urchins)
Peronella orbicularis (apical)
Peronella orbicularis (apical)
Description Apical system: The terminal plates with small pores are incorporated into the monobasal madreporite. There are four gonopores. The hydropres are scattered over the madreporite. (The small tubercles covering the whole plate are only drawn at the lower part for clarity).
Scale 2 mm.
Author Mortensen, Theodor JPG file - 69.88 kB - 945 x 1 006 pixels added on 2005-02-23206 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor
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