Phylogenetic Systematics oflguanine Lizards 



121 



Di Br Ct Am Co Sa Ig Cy Di Br Ct Am Co Sa Ig Cy 



Am 



Co 



Sa Am 



Co 



Sa 



Am Co 



FIG. 47. Alternative interpretations of character transformation for homoplastic characters on a 

 minimum-step cladogram (Fig. 47A). A and B are alternative interpretations for character 25; C and D for 

 characters 54, 68, 69, and 70; E and F for character 46. Solid squares represent transformations to the 

 derived condition; open squares represent reversals; half-solid squares represent intermediate slates. 



nodes are diagnosed by more than two derived characters that are unique and unreversed 

 and strongly outweigh conflicting characters. Node 1 is also well supported, but it is 

 supported by the results of an analysis at a more inclusive hierarchical level. Node 2 is the 

 most weakly supported, for it supports the monophyly of different groups of basic taxa on 

 the two minimum-step cladograms. 



