Sigwart; Sutton M.D. 2007. Deep molluscan phylogeny: synthesis of palaeontological and neontological data. Proceedings of the Royal Society B: Biological sciences 274: 2413–2419. doi:10.1098/rspb.2007.0701. PMID 17652065. For a summary, see The Mollusca. University of California Museum of Paleontology. http://www.ucmp.berkeley.edu/taxa/inverts/mollusca/mollusca.php.
Sigwart; Sutton M.D. 2007. Deep molluscan phylogeny: synthesis of palaeontological and neontological data. Proceedings of the Royal Society B: Biological sciences 274: 2413–2419. doi:10.1098/rspb.2007.0701. PMID 17652065. For a summary, see The Mollusca. University of California Museum of Paleontology. http://www.ucmp.berkeley.edu/taxa/inverts/mollusca/mollusca.php.