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CAMERON, C B, J R Garey, B J Swalla. Evolution of the chordate body plan: new insights from phylogenetic analyses of deuterostome phyla. Proceedings of the National Academy of Sciences of the United States of America. 2000-04-25, roč. 97, čís. 9, s. 4469–4474. Dostupné online. ISSN0027-8424.
ADOUTTE, A, G Balavoine, N Lartillot, O Lespinet, B Prud'homme, R de Rosa. The new animal phylogeny: reliability and implications. Proceedings of the National Academy of Sciences of the United States of America. 2000-04-25, roč. 97, čís. 9, s. 4453–4456. Dostupné online [cit. 2010-03-18]. ISSN0027-8424.
SWALLA, Billie J, Andrew B Smith. Deciphering deuterostome phylogeny: molecular, morphological and palaeontological perspectives. Philosophical Transactions of the Royal Society B: Biological Sciences. 2008-04-27, roč. 363, čís. 1496, s. 1557–1568. ISSN0962-8436. DOI10.1098/rstb.2007.2246.
GERHART, John, Christopher Lowe, Marc Kirschner. Hemichordates and the origin of chordates. Current Opinion in Genetics & Development. 2005-08, roč. 15, čís. 4, s. 461–467. Dostupné online. ISSN0959-437X. DOI10.1016/j.gde.2005.06.004.
WINCHELL, Christopher J, Jack Sullivan, Christopher B Cameron, Billie J Swalla, Jon Mallatt. Evaluating hypotheses of deuterostome phylogeny and chordate evolution with new LSU and SSU ribosomal DNA data. Molecular Biology and Evolution. 2002-05, roč. 19, čís. 5, s. 762–776. Dostupné online [cit. 2010-03-30]. ISSN0737-4038.
PHILIPPE, Hervé, Nicolas Lartillot, Henner Brinkmann. Multigene analyses of bilaterian animals corroborate the monophyly of Ecdysozoa, Lophotrochozoa, and Protostomia. Molecular Biology and Evolution. 2005-05, roč. 22, čís. 5, s. 1246–1253. Dostupné online [cit. 2010-03-30]. ISSN0737-4038. DOI10.1093/molbev/msi111.
DELSUC, Frédéric, Henner Brinkmann, Daniel Chourrout, Hervé Philippe. Tunicates and not cephalochordates are the closest living relatives of vertebrates. Nature. 2006-02-23, roč. 439, čís. 7079, s. 965–968. Dostupné online [cit. 2010-03-30]. ISSN1476-4687. DOI10.1038/nature04336.