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Dromornis
''Dromornis'' is a genus of prehistoric birds that stood up to 3 metres (10 feet) tall and weighed up to half a tonne.
==Taxonomy==
Although they looked like giant emus, the ''Dromornis'' are more closely related to waterfowl. ''Dromornis'' are part of a family of giant birds called Dromornithidae that lived from 8 million years ago until less than 30,000 years ago. Australia had been separated from the big southern landmass of Gondwana for millions of years by this time. The animals of Australia had evolved very slowly in almost complete isolation from the animals of other continents. The type specimen, a femur, was found in a 55 metre deep well at Peak Downs, Queensland, and subsequently described by Richard Owen in 1872.〔Murray, P. F. Vickers-Rich, P. (2004)〕 Due to the poor fossil record of ''D. australis'' (the type species of the genus) and the large time gap between the two ''Dromornis'' species, ''D. stirtoni'' may eventually be reassigned to the genus ''Bullockornis''.
They are sometimes referred to as Mihirung birds, or the "Stirton's Thunder Birds". 'Mihirung paringmal' is an Aboriginal word from the Tjapwuring people of Western Victoria and it means 'giant bird'.
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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