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Hongshanornithidae : ウィキペディア英語版 | Hongshanornithidae
Hongshanornithidae is an extinct group of early ornithuromorph birds from the early Cretaceous period of China. It includes the genera ''Hongshanornis'' (the type genus) and ''Tianyuornis'' from the Yixian Formation of Inner Mongolia, ''Longicrusavis'' from the Yixian Formation of Liaoning Province, ''Parahongshanornis'' from the Jiufotang Formation of Liaoning Province, and ''Archaeornithura'', the oldest known member, from the Huajiying Formation of Hebei Province.〔 == Description == Hongshanornithids were small, approximately the size of modern phoebes. Their legs are proportionally long in comparison to the wings, suggesting that they were aquatic wading birds. They most likely lacked beaks and had teeth in their jaws.〔
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「Hongshanornithidae」の詳細全文を読む
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