Fig. 7 in The herpetofauna of Veracruz, Mexico: composition, distribution, and conservation status

Fig. 7. UPGMA generated dendrogram illustrating the similarity relationships of species richness among the herpetofaunal components in the four physiographic regions of Veracruz (based on the data in Table 7; Sokal and Michener 1958). Similarity values were calculated using Duellman's (1990) Coefficient of Biogeographic Resemblance (CBR).