Figure 4 in Phylogeny explains better than ecology or body size the variation of the first lower molar in didelphid marsupials

Figure 4: Shape deformations related to the first molar (m1). Deformation grids of the predicted shape of m1 for females (A) from the minimum (left, 0.090), medium (center, 0.785), and maximum (right, 1.568); males (B) from the minimum (left, 0.065), medium (center, 0.732), and maximum (right, 1.498) values of natural logtransformed centroid size (body size). Deformation grids related to habitat for females (C) and males (D) from the most terrestrial/semiaquatic (left) to the most arboreal (right).