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Photo GalleryTetrapygus niger (apical system)
Description Apical system: Four large anal plates cover the peroproct.Scale 3 mm. JPG file - 144.63 kB - 1 003 x 1 026 pixels added on 2005-02-23211 viewsEchinoidea taxaScan of drawing Tetrapygus niger (Molina, 1782) accepted as Arbacia nigra (Molina, 1782)checked Kroh, Andreas 2021-02-24From reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... Download full size 
© 2005 Schultz, Heinke
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