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Kelenken
''Kelenken guillermoi'' was a species of giant flightless predatory birds of the extinct family Phorusrhacidae, or "terror birds". ''K. guillermoi'' lived in the Langhian stage of the Miocene, some 15 million years ago, in Argentina along with ''Argentavis''. With a skull 28 inches (71 cm) long (including its 18 inch, 45.7 cm beak), it had the largest head of any known bird. It is the largest species of phorusrhacid. The tarsometatarsus was about 45 cm long. ==Diet== It is not entirely clear how ''Kelenken'' captured and killed its prey. As a large flightless carnivore, ''Kelenken'' likely chased down and killed its prey with several bone-shattering blows from its massive beak. Another possibility is that it may have picked up its prey item, then proceeded to shake it vigorously in order break its back. It is also possible that ''Kelenken'' may have been a scavenger, driving off other predators from their kills with its impressive size.
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「Kelenken」の詳細全文を読む
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