Asioryctes nemegetensis (Kielan-Jaworowska 1975, 1984; middle Late Cretaceous, Djadokhta Formation, ~85 mya) was originally considered a basal placental, but nests with bandicoots in the large reptile tree. Distinct from the original restoration, pedal digits 2 and 3 are gracile, while pedal digit 1 is a vestige.

Maelestes gobiensis (Wible et al. 2007; late Cretaceous, 75-71 mya; PSS-MAE 607) was originally considered a Eutherian, but not a placental. Maelestes has epipubes, a marsupial trait. This poorly preserved taxon (Fig 1) now nests with the Late Cretaceous marsupial, Asioryctes basal to Lophiodontidae, including Lophiodon, Thomashuxleya and Periphragnis.

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Ladevèze S, Asher RJ, Sánchez-Villagra MR 2008. Petrosal anatomy in the fossil mammal Necrolestes: evidence for metatherian affinities and comparisons with the extant marsupial mole. J Anat 213(6):686–697.

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Rougier GW, Wible JR, Beck RMD and Apesteguía S 2012. The Miocene mammal Necrolestes demonstrates the survival of a Mesozoic nontherian lineage into the late Cenozoic of South America.

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Travouillon KJ, Gurovich Y; Beck RMD and Muirhead J 2010. An exceptionally well-preserved short-snouted bandicoot (Marsupialia; Peramelemorphia) from Riversleigh's Oligo-Miocene deposits, northwestern Queensland, Australia. Journal of Vertebrate Paleontology. 30 (5): 1528–1546.

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Wible JR, Rougier GW, Novacel MJ and Asher RJ 2007a. The eutherian mammal Maelestes gobiensis from the Late Cretaceous of Mongolia and the phylogeny of Cretaceous Eutheria. Bulletin of the American Museum of Natural History 327:1–123.

Wible JR, Rougier GW, Novacek MJ and Asher RJ 2007b. Cretaceous eutherians and Laurasian origin for placental mammals near the K/T boundary." Nature, 447: 1003-1006.

wiki/Asioryctes
wiki/Maelestes