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References
An Introduction to Cladistics. (n.d.). Retrieved March 20, 2016, from http://www.ucmp.berkeley.edu/clad/clad1.html
ENSI/SENSI: Evolution/Nat.of Sci.Home Page. (n.d.). Retrieved March 21, 2016, from http://www.indiana.edu/~ensiweb/home.html
Gregory, R. (2008). Understanding Evolutionary Trees. Evolution: Education and Outreach, 121-137.
Reconstructing trees: Cladistics. (n.d.). Retrieved March 20, 2016, from http://evolution.berkeley.edu/evolibrary/article/phylogenetics_05
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