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The bettongs are species of the genus ''Bettongia'', sometimes referred to as rat-kangaroos. Four extant species are recognised:〔 * Eastern bettong, ''Bettongia gaimardi'', also known as the Tasmanian bettong * Boodie, ''Bettongia lesueur'' * Woylie, ''Bettongia penicillata'' * Northern bettong, ''Bettongia tropica'' In addition, at least two extinct species are known: * ''Bettongia moyesi'', Middle Miocene bettong from Riversleigh〔Flannery, T.F. and Archer, M, 1987. Bettongia moyesi, a new and plesiomorphic kangaroo (Marsupialia: Potoridae) from Miocene sediments of northwestern Queensland. ‘Possums and Opossums: Studies in Evolution’, Pp.759–67. ed. M. Archer. Surrey Beatty & Sons and the Royal Zoological Society of New South Wales, Sydney (pdf )〕 * Nullarbor dwarf bettong, †''Bettongia pusilla'', known only from the fossil record The rufous rat-kangaroo (''Aepyprymnus rufescens'') is sometimes referred to as a bettong (rufous bettong), but this is not strictly correct. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「bettong」の詳細全文を読む スポンサード リンク
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