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Hyattechinus pentagonus (aboral)
Description Upper side: The broad interambulacra are covered with many columns of imbricating plates. The ambulacra are very narrow.Diameter 49 mm; Lower Carboniferous, Pennsylvania, USA. HVT JPG file - 161.63 kB - 852 x 810 pixels added on 2005-02-23203 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha... © 2005 Schultz, Heinke Click here to return to the thumbnails overview |
