A fact from Mediaster aequalis appeared on Wikipedia's Main Page in the Did you know column on 2 November 2017 (check views). The text of the entry was as follows:
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These were once cited as references but have since been removed by an editor. The citations lacked page numbers and I myself have not had access to them, but for posterity, since they might be useful to a future editor they were:
Lambert, Philip (2000). Sea Stars of British Columbia, Southeast Alaska and Puget Sound. Royal BC Museum
Kozloff, Eugene (1993). Seashore Life of the Northern Pacific Coast. University of Washington Press, Seattle, WA.
I was expanding the article and found other, more detailed sources, so I considered these tagged sources redundant. Nor did some of the information to which they referred seem correct, for example "It is found on many types of beaches at very low tides, usually negative tides." Cwmhiraeth (talk) 06:16, 12 September 2017 (UTC)[reply]
Well two of the websites you added as references, racerocks.com ("Reference: The Sea Stars of British Columbia, Lambert, 1981, British Columbia Provincial Museum, Victoria") and seastarsofthepacificnorthwest.info ("I have drawn most of the factual details about Pacific coast sea stars from Sea Stars of British Columbia, Southeast Alaska and Puget Sound by Philip Lambert (UBC Press, 2000)."), both got their info from Lambert, and the "wallawalla.edu" site lists Seashore Life of the Northern Pacific Coast as one of its general references. If an editor has access to the books, it seems preferable to site those books instead of those websites which just repeat the information second-hand. Umimmak (talk) 06:45, 12 September 2017 (UTC)[reply]