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Babyrousa bolabatuensis
The Bola Batu babirusa〔Grubb, 2005, p. 637〕 (''Babyrousa bolabatuensis'') is a proposed species of babirusa from the Indonesian island of Sulawesi. It was first described in 1950 as a subspecies of ''Babyrousa babyrussa'', then the only recognized species of babirusa, and raised to species rank by Colin Groves and Erik Meijaard in 2002.〔Meijaard and Groves, 2002, p. 33〕 At present the Bola Batu babirusa is only known for certain from subfossil remains from the southern arm of Sulawesi.〔 Based on a single skull from central Sulawesi it has been suggested that babirusas from this part of Sulawesi represent an extant population of the Bola Batu babirusa,〔Groves, 1980, p. 44〕 and this was followed in the third edition of ''Mammal Species of the World''.〔 However, the most recent major review also found similarities between the central Sulawesi specimen and the Togian babirusa, leading them to conclude that it represents an undescribed taxon and that the taxonomic position of central Sulawesi babirusas only can be determined through additional specimens.〔Meijaard and Groves, 2002, p. 37–38〕 Subfossil remains from the south-western arm of Sulawesi, where now likely extinct, have been classified as Bola Batu babirusas,〔 but these were considered unclassifiable in 2002, as were extant populations from the eastern arm of Sulawesi and Buton due to the lack of specimens.〔Meijaard and Groves, 2002, p. 38〕 Due to these uncertainties, the IUCN Red List provisionally synonymized ''B. bolabatuensis'' under the northern Sulawesi species, ''B. celebensis'', pending clarification of the taxonomy of Sulawesi babirusas.〔Macdonald et al., 2008〕
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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