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University of California Publications in Zoology 



FIG. 55. Cladogram illustrating phylogenetic relationships within Ctenosaura. Synapomorphies for 

 the numbered nodes and basic taxa are given in the text. 



Node 3 (unnamed) 

 1. Some anterior whoris of strongly spinous caudal scales separated by one or fewer 

 rows of smaller scales (18-1,-2, or-3). This character does not occur in all C. bakeri, a 

 case most simply interpreted as a character reversal. 



Ctenosaura hemilopha 

 1. Middorsal scale row broadly discontinuous in lumbosacral region (14-1). This 

 character also occurs in some C. clarki and C. defensor, in which it is interpreted as 

 convergent. 



