Fig. 1

Phylogeny of main species discussed in the text, representatives of several major groups of extant marsupials, including Didelphimorphia, Microbiotheria, Peramelemorphia and Diprotodontia. Phylogeny of diprotodontians is after Meredith et al. [211], of dasyuromorphians is after Westerman et al. [212]; major relationships among groups based on Gallus et al. [213] and Beck et al. [214]. Animal outlines modified from Horovitz and Sánchez-Villagra [102] and from Gallus et al. [213]