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pnas.org
Giribet; Okusu, A; Lindgren, A.R.; Huff, S.W.; Schrödl, M; Nishiguchi, M.K. (May 2006). "Evidence for a clade composed of molluscs with serially repeated structures: monoplacophorans are related to chitons" Proceedings of the National Academy of Sciences of the United States of America 103 (20): 7723–7728. doi:10.1073/pnas.0602578103. PMID 16675549. PMC 1472512. http://www.pnas.org/cgi/pmidlookup?view=long&pmid=16675549.
tolweb.org
"Tree of Life". Arquivado dende o orixinal o 13 de xaneiro de 2013. Consultado o 23 de decembro de 2009.
web.archive.org
"Tree of Life". Arquivado dende o orixinal o 13 de xaneiro de 2013. Consultado o 23 de decembro de 2009.