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animal
>
Gansu bird order
甘肃鸟目
(gansuiformes)是今鸟亚纲(ornithurae)的一目。1984年在中国甘肃省玉门市附近早白垩世地层中发现了鸟类化石,被命名为甘肃鸟。根据它具有许多原始特征,但又具有较多进步特征,不同于已知的化石鸟类,建立了
甘肃鸟目
(gansuiformes)。并认为它可能是滨岸及近水鸟类的祖先。