Hesperornis is an extinct genus of flightless aquatic birds that lived during the Late Cretaceous.
黄鸟是一种已经灭绝的不飞翔的水鸟,生活在白垩。
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These feathers, then, presumably adorned a diving bird-perhaps Hesperornis, a flightless North American diver from precisely this period.
这些羽毛想必当时是归潜所有——是“黄昏”,一种恰好生活在这一时期不会飞翔的北美潜。
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