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O'Leary, M.A.; Bloch, J.I.; Flynn, J.J.; Gaudin, T.J.; Giallombardo, A.; Giannini, N.P.; Goldberg, S.L.; Kraatz, B.P. et al. (2013). “The Placental Mammal Ancestor and the Post-K-Pg Radiation of Placentals”. Science339 (6120): 662-667. doi:10.1126/science.1229237. hdl:11336/7302. PMID23393258.
Song, S.; Liu, L.; Edwards, S.V.; Wu, S. (2012). “Resolving conflict in eutherian mammal phylogeny using phylogenomics and the multispecies coalescent model”. Proceedings of the National Academy of Sciences109 (37): 14942-14947. doi:10.1073/pnas.1211733109. PMID22930817.
Upham, N.S.; Esselstyn, J.A.; Jetz, W. (2019). “Inferring the mammal tree: Species-level sets of phylogenies for questions in ecology, evolution, and conservation”. PLOS Biology17 (12): e3000494. doi:10.1371/journal.pbio.3000494. PMID31800571.(see e.g. Fig S10)