Illinois Natural History Survey - University of Illinois

Phylogentic Relationships of the Mollusca

This phylogentic tree is from the University of California Museum of Paleontology web page on Mollusca.  The tree shown here is based on Sigwart, J.D., and M.D. Sutton. 2007. Deep molluscan phylogeny: synthesis of palaeontological and neontological data. Proceedings of The Royal Society B 274(1624):2413-2419; and suggestions from Gonzalo Giribet, Harvard University.  The web page text was written by Paul Bunje.  There are seven main groups of Mollusca: Bivavlia, Monoplacophora, Gastropoda, Cephalopoda, Scaphopoda, Aplacophora, and Polyplacophora.  Of these, only Bivalvia and Gastropoda have representatives in Illinois.

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