Kroh, A. & Mooi, R. (2018). World Echinoidea Database. Spatangoidea Gray, 1825. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2018) European Register of Marine Species at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=852322 on 2018-04-24
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2018). European Register of Marine Species. Spatangoidea Gray, 1825. Accessed at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=852322 on 2018-04-24
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