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Photo GalleryHygrosoma petersii (ambulacral plates)
Description Plates of half an ambulacrum: a. Aboral side: The demiplates lie in the middle of the plates, the pore-pair of the primary plate almost above one demiplate, b. Oral side: The demiplates are in contact with the outer suture.Scale 3 mm. JPG file - 59.05 kB - 788 x 584 pixels added on 2011-02-23595 viewsEchinoidea taxaScan of drawing Hygrosoma petersii (A. Agassiz, 1880)checked Kroh, Andreas 2021-02-24From reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... Download full size 
© 2011 Mortensen, Theodor
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