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IMIS Photogallery » Echinodermata (echinoderms) » Echinoidea (sea urchins)
Goniocidaris (primary spines)
Goniocidaris (primary spines)
Description Shape of primary spines: a. The primary spines are set with thorns, but a distinct basal disc is lacking: Goniocidaris (Goniocidaris) tubaria b. The spines are set only with a pair of spurs at the base of the shaft: Goniocidaris (Goniocidaris) umbraculum Author Schultz, Heinke JPG file - 43.78 kB - 313 x 684 pixels added on 2011-02-23446 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Schultz, Heinke
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