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Ajancingenia
''Ajancingenia'' is a genus of oviraptorid theropod dinosaurs, with one known species, ''Ajancingenia yanshini''. Fossils have been found in several Late Cretaceous-age formations (approximately 70 million years ago) of Mongolia, most prominently in the Khermin Tsav beds of the Barun Goyot Formation. ''Ajancingenia'' is known from several specimens, which include the arms, legs, pelvis, shoulder girdle, and partial skull, and a few vertebrae. Some material referred to as ''Ajancingenia'' comes from younger formations, but the identification of some of these specimens is questionable.
==Etymology==
''Ajancingenia'' was first described and named by Rinchen Barsbold in 1981 and the type species is ''Ingenia yanshini''. The name "Ingenia" derives from the Ingen Khoboor Depression of Bayankhongor Province, Mongolia, from whence it was collected, while the specific name ''yanshini'' was chosen in honour of academician Aleksandr Leonidovich Yanshin (1911–1999), who was adviser and mentor to Rinchen Barsbold during his time at the Paleontological Institute in St. Petersburg, Russia.〔Barsbold, R. (1981). "Bezzubye khishchnye dinozavry Mongolii." (carnivorous dinosaurs of Mongolia. ). ''Trudy -- Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya'', 15: 28-39, 124. (Russian, w/ English summary ).〕
The generic name ''Ingenia'' was preoccupied by the generic name of ''Ingenia mirabilis'' Gerlach, 1957, a tripyloidid nematode. Thus, an alternative generic name, ''Ajancingenia'', was proposed by Jesse Easter in 2013. The replacement generic name is derived also from ''ajanc'' (аянч) a traveler in Mongolian, as a Western allusion of sticking one’s thumb out for hitchhiking, in reference to the first manual ungual of ''Ajancingenia'' which is twice as large as the second.〔
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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