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Arbacia lixula (peristomial edge)
Description Peristomial edge: The widened pore zones of each ambulacral column protrudes into the peristome, and the interambulacra are indented by the broad, shallow buccal notches, bordered by "tags" (arrow). This gives the peristomial edge a sinuous appearance.Scale 10 mm. JPG file - 175.29 kB - 1 418 x 809 pixels added on 2005-02-23772 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Mortensen, Theodor
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