反鸟目。
Enantiornithes.
作者信息
O'Connor Jingmai
机构信息
Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA.
出版信息
Curr Biol. 2022 Oct 24;32(20):R1166-R1172. doi: 10.1016/j.cub.2022.07.074.
If you find a bird bone in deposits from the Cretaceous period (145-66 million years ago), chances are it will belong to an enantiornithine bird. This extinct group of birds was mostly arboreal and dominated terrestrial environments from 130 to 66 million years ago. With approximately 90 known genera, they account for more than half of the known diversity of Mesozoic birds. Yet, despite apparently out-competing birds more closely related to living species in most Cretaceous continental environments, enantiornithines mysteriously went extinct at the end of the Cretaceous, alongside all other non-neornithine (crown-bird) dinosaurs.
如果你在白垩纪（1.45-6600 万年前）的沉积物中发现鸟骨，那么它很可能属于反鸟类。这个已灭绝的鸟类群体主要栖息在树上，在 1.3 亿至 6600 万年前统治着陆地环境。已知约有 90 个属，它们占中生代鸟类已知多样性的一半以上。然而，尽管反鸟类在大多数白垩纪大陆环境中明显比与现存物种更接近的鸟类具有竞争优势，但它们却与所有其他非新鸟类（冠鸟类）恐龙一起在白垩纪末期神秘灭绝。
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