Plesiorycteropus and MacPhee concurred. Remains of both Majoria rapeto and Hypogeomys boulei fall at the upper end of the size range of the genus, indicating that they are referable to P. madagascariensis. Another Plesiorycteropus innominate was mistakenly assigned to Daubentonia robusta, the extinct giant aye-aye, and other material has been misidentified as of a dwarf lemur (Cheirogaleus). Relationships Filhol had classified Plesiorycteropus as close to the aardvark on the basis of morphological similarities. In his 1946 review, Charles Lamberton was unable to provide a definitive allocation, confused by the various similarities he saw with aardvarks, pangolins, armadillos, and anteaters. He believed it was most likely a primitive, isolated member of "Edentata", a group in which he included aardvarks, pangolins, and Xenarthra (sloths, armadillos, and anteaters). He rejected some alternatives, such as a close affinity to aardvarks or the possibility that the material assigned to Plesiorycteropus did not in fact represent a single animal. Bryan Patterson, who revised tubulidentates (the order of which the aardvark is the only living representative) in the 1970s, accepted Plesiorycteropus as a member of the group, dismissing many similarities with pangolins and other animals as convergent. However, he placed it as the only member of its own subfamily Plesiorycteropodinae in view of its differences from other tubulidentates (subfamily Orycteropodinae), and hypothesized that it arrived on Madagascar in the Eocene, at the same time as the lemurs. Johannes Thewissen, who critiqued some aspects of Patterson's classification in 1985, also accepted Plesiorycteropus as a tubulidentate without comment. Reviewing Patterson's and Thewissen's contributions in 1994, Ross MacPhee found little support for the classification of Plesiorycteropus as a tubulidentate in their data. MacPhee used a cladistic analysis of eutherians to ascertain the relationships of the genus, but found that while different analytic variants supported different affinities—with aardvarks, hyraxes, ungulates (hooved mammals), and even lipotyphlans (shrews, moles, hedgehogs, and allies)—there was no compelling evidence linking it to any other eutherian group. Therefore, he erected a separate order for Plesiorycteropus, named Bibymalagasia, arguing that it would be unacceptable to leave a Recent eutherian unassigned to any order and that discovery of more material, or further analysis, was unlikely to demonstrate close affinities of Plesiorycteropus with any other order. He considered it possible but unlikely that a few fossil taxa, such as Palaeorycteropus and Leptomanis from the Paleogene of France, would eventually be found to be bibymalagasians. Various analyses published by Robert Asher