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Hemiphormosoma paucispinum (ambulacra + apical system)
Hemiphormosoma paucispinum (ambulacra + apical system)
Description a. Aboral ambulacra: The pore-pairs in the primary plates are small in contrast to those in the demiplates; b. Oral ambulacra: The pore-pairs in the demiplates are small and in the primary plates entirely lacking. Pores in red; c. Part of apical system: The plates are small and scattered on the membrane.
b. Scale 4 mm, c. Scale 2 mm. Author Mortensen, Theodor JPG file - 106.70 kB - 1 493 x 427 pixels added on 2011-02-23169 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Mortensen, Theodor
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