Figure 1.

Results from discriminant function analysis of 34 cranial, dental, and external morphometric characters. Body mass was not considered in this analysis. Detailed character descriptions are given in ref. 11. Functions 1 and 2 (A) show conspicuous discrimination of M. berthae from other species. Functions 2 and 3 (B) show discrimination of all species. Combined, the first through third discriminant functions describe 94.5% of the variance in the data set; 55.9%, 31.7%, and 6.9% for the first, second, and third discriminant functions, respectively. Dashed lines are drawn around species clusters for purposes of illustration; they do not convey statistical information.