Uncertain position of turtles in the amniote tree of life. The three (out of eight) main hypotheses for the position of turtles within recent amniotes (bold dashed lines) and the alternative arrangements of cryptodire turtle groups compared in this study. a, b and c and light dashed lines indicate the most basal taxon according to each hypothesis. For all hypotheses compared see Figure S1 and S2 and Table S6.
Werneburg and Sánchez-Villagra BMC Evolutionary Biology 2009 9:82 doi:10.1186/1471-2148-9-82