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Aporocidaris usarpi (aboral + oral + ambulacral plates)
Description a. Aboral side: The apical system is very large (secondary tubercles are shown only for a single genital, ocular and periproctals plate, but omitted elsewhere). b. Oral side: The areoles are strongly ovate below the ambitus. c. Part of ambulacrum: The pore-pairs are connected by a constricted passage.a+b. Scale 10 mm, c. Scale 2 mm. JPG file - 147.67 kB - 1 299 x 492 pixels added on 2011-02-23276 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Schultz, Heinke
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