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Centrocidaris doederleini (pedicellariae)
Centrocidaris doederleini (pedicellariae)
Description From left to right: a. Head of a globiferous pedicellaria with a single valve. The stem is provided with a limb. b. Part of transverse section of aboral primary spine: The furrows between the ridges are filied with cortical meshwork (anastomosing hair) covered by a glabrous crust which is perforated by minute pores. This crust gives the spine a smooth appearance. The ridges are perceptible only by the colour, because they are rather translucent. The ambital primary spines become gradually more thorny. c. Apical system. d. Secondary spine.
a. Scale 250 µ, b. Scale 250 µ, c. Scale 4 mm, d. Scale 3 mm. Author Mortensen, Theodor JPG file - 144.95 kB - 1 719 x 627 pixels added on 2011-02-23252 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor
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