Zhe-Xi Luo, Chong-Xi Yuan, Qing-Jin Meng, Qiang Ji.: A Jurassic eutherian mammal and divergence of marsupials and placentals.Nature, 2011; 476 (7361): 442 doi:10.1038/nature10291
Paul M. Velazco, Alexandra J. Buczek, Eva Hoffman, Devin K. Hoffman, Maureen A. O’Leary, Michael J. Novacek: Combined data analysis of fossil and living mammals: a Palaeogene sister taxon of Placentalia and the antiquity of Marsupialia. Cladistics 38 (3), 1922, S. 359–373, doi:10.1111/cla.12499
Peggy L. Brady, Alejandro Castrellon Arteaga, Sergi López‑Torres, Mark S. Springer: The effects of ordered multistate morphological characters on phylogenetic analyses of eutherian mammals. Journal of Mammalian Evolution 31, 2024, S. 28, doi:10.1007/s10914-024-09727-2
Maureen A. O’Leary et al.: The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals.Science 8, Februar 2013, Band 339, Nr. 6120 Seite 662–667, doi:10.1126/science.1229237
Jonathan I. Bloch, Mary T. Silcox, Doug M. Boyer & Eric J. Sargis: New Paleocene skeletons and the relationship of plesiadapiforms to crown-clade primates.PNAS, January 23, 2007, vol. 104, no. 4 doi:10.1073/pnas.0610579104