List of Illustrations ix 



54. Geographic distribution of CreAio5flMra, 147 



55. Cladogram illustrating phylogenetic relationships within Ctenosaura, 154 



56. Geographic distribution of Sawroma/t^, 158 



57. Geographic distribution of Amblyrhynchina {Amblyrhynchus and Conolophus), 161 



58. Geographic distribution of /^Mana, 169 



59. Geographic distribution of C}'c/Mra, 171 



60. All nine possible fully resolved cladogram topologies for four unspecified outgroups 

 and an ingroup, 179 



61. Dendrograms corresponding with the nine cladograms in Figure 60 after each is 

 rerooted at the outgroup node, 180 



62. Examples of polarity inferences for different arrangements of outgroup character state 

 distributions, 182 



63. All possible cladogram topologies for two unspecified outgroups and an ingroup 

 before and after rerooting at the outgroup node, 185 



64. All possible cladogram topol9gies for two unspecified near outgroups, one more 

 remote outgroup, and an ingroup before and after rerooting at the outgroup node, 186 



PLATE 

 1. Lateral and dorsal views of the skull oi Amblyrhynchus cristatus, 91 



