Bishops whitmorei (Rich et al. 2001; Early Cretaceous) nests with the much smaller long rostrum Asioryctes from the Late Cretaceous. Flannery et al. 2022 did not mention Asioryctes and reported, "Bishopids fam. nov. are the immediate sister taxon to therian mammals." This is not supported by the LRT.

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. This is the 'long rostrum' taxon in the LRT.

Perameles nasuta (Geoffroy 1803, 1804, extant, 40 cm long) is the long nosed bandicoot. This basal marsupial is a nocturnal omnivore, like its ancestor Didelphis. It has a rear-facing pouch, three long digging fingers, two short ones and a pes dominated by pedal digit 4. Digits 2 and 3 were reduced to grooming claws. Gestation lasts a mere 12.5 days, then the young spend another 8 weeks in the marsupium. The long nosed is retained from ancestors like Ukhaatherium and Juramaia.

Macrotis lagotis (Bensley 1903, extant, 29-55cm long) is the rabbit-bandicoot or bilby.

Bensley BA1903. On the evolution of the Australian Marsupialia; Zoology 9(3):83–217. https://doi.org/10.1111/j.1096-3642.1903.tb00447

Geoffrey Saint-Hilaire E 1803. Note sur les genres Phascolomis et Perameles, nouveaux genres d’animaux à bourse. Bulletin des Sciences par la Société Philomathique de Paris 80, 49–150.

Geoffroy Saint-Hilaire E 1804. Ann. Mus. Hist. Nat. Paris, 4:62. online

Kielan-Jaworowska Z 1975. Preliminary description of two new eutherian genera from the Late Cretaceous of Mongolia. Palaeontologia Polonica 33:5-15.

Rich et al 2001. A second tribosphenic mammal from the Mesozoic of Australia. Records of the Queen Victoria Museum 110, 1–9.

wiki/Perameles
wiki/Macrotis
wiki/Bishops
wiki/Asioryctes