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Arachnoides placenta (oral)
Description Oral side: The periproct opens into a distinct marginal notch (arrow), and a naked furrow passes along the median suture in the posterior interambulacrum. In Arachnoides tenuis there is no marginal notch and no naked furrow.
Author Schultz, Heinke
JPG file - 485.58 kB - 945 x 1 358 pixels
added on 2005-02-23589 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha...
© 2005 Schultz, Heinke
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