Cladistics from Greek cládos, "branch is an approach to biological classification in which organisms are categorized in groups ("clades") based on the most recent common ancestor. Hypothesized relationships are typically based on shared derived characteristics (synapomorphies)...
Turtles all the way down: loggerheads at the root of the chelonian tree.
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Evolution & development, ISSN: 1525-142X, Vol: 11, Issue: 2, Page: 133-5
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- Agricultural and Biological Sciences; Biochemistry, Genetics and Molecular Biology; Biology
By Tyler R. Lyson , '06 and Scott F. Gilbert, Published on 03/01/09