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Ammotrophus cyclius (oral)
Description Oral side: The combed areas (darker shadowed) are considerably smaller than in Arachnoides and Fellaster. The periproct is positioned on the oral side, unique in extant Arachnoididae. Six interambulacral plates are isolated at the margin.Test length 47 mm; Encounter Bay, Adelaide, South Australia. JPG file - 338.03 kB - 1 181 x 1 217 pixels added on 2005-02-23466 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Smith, Andrew B.
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