Kroh, A.; Mooi, R. (2021). World Echinoidea Database. Prionocidaris bispinosa var. ramsayi Döderlein, 1902. Accessed at: http://marinespecies.org/echinoidea/aphia.php?p=taxdetails&id=766022 on 2024-03-29
basis of recordMortensen, T. (1928b). A Monograph of the Echinoidea. I. Cidaroidea, 551 pp., C. A. Reitzel & Oxford University Press, Copenhagen & London. page(s): 472-473 [details]
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