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''Diprotodon'', meaning "two forward teeth", is the largest known marsupial ever to have lived. Along with many other members of a group of unusual species collectively called the "Australian megafauna", it existed from approximately 1.6 million years ago until extinction some 46,000 years ago (through most of the Pleistocene epoch). ''Diprotodon'' species fossils have been found in sites across mainland Australia, including complete skulls and skeletons, as well as hair and foot impressions.〔 Female skeletons have been found with babies located where the mother's pouch would have been.〔 The largest specimens were hippopotamus-sized: about from nose to tail, standing tall at the shoulder and weighing about .〔(Ice Age Marsupial Topped Three Tons, Scientists Say ). Retrieved 17 September 2003.〕 Aboriginal rock art images in Quinkan traditional country (Queensland, Australia) have been claimed to depict diprotodonts. They inhabited open forest, woodlands, and grasslands, possibly staying close to water, and eating leaves, shrubs, and some grasses. The closest surviving relatives of ''Diprotodon'' are the wombats and the koala. It is suggested that diprotodonts may have been an inspiration for the legends of the bunyip, as some Aboriginal tribes identify ''Diprotodon'' bones as those of "bunyips". ==Discovery== The first recorded ''Diprotodon'' remains were discovered in a cave near Wellington in New South Wales in the early 1830s by Major Thomas Mitchell who sent them to England for study by Sir Richard Owen. In the 1840s Ludwig Leichhardt discovered many ''Diprotodon'' bones eroding from the banks of creeks in the Darling Downs of Queensland and when reporting the find to Owen commented that the remains were so well preserved he expected to find living examples in the then-unexplored central regions of Australia. The majority of fossil finds are of demographic groups indicative of diprotodonts dying in drought conditions. For example, hundreds of individuals were found in Lake Callabonna with well-preserved lower bodies but crushed and distorted heads.〔 It is theorised several family groups sank in mud while crossing the drying lake bed. Other finds consist of age groupings of young or old animals which are first to die during a drought. In 2012, a significant group of about 40 was found at Eulo, South-West Queensland.〔(Giant marsupials' graveyard unearthed in Queensland ) By Chrissy Arthur - Australian Broadcasting Corporation - Retrieved 21 July 2012.〕 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「diprotodon」の詳細全文を読む スポンサード リンク
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