World Register of Marine Species (WoRMS)
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Stimpson, W. (1862). On new genera and species of starfishes of the family Pycnopodidae (Asteracanthion Mueller & Troschel). Proceedings of the Boston Society of Natural HIstory. 8: 261-273.
Verrill, A.E. (1909). Description of new genera and species of starfishes from the North Pacific coast of America. American Journal of Science 28: 59-70.