archaeopteryx

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Moreover, its bone structure was similar to that of Archaeopteryx.
而且，恐爪龙的骨骼结构与始祖鸟很相似。
Archaeopteryx, supposedly the oldest and most primitive bird on Earth, might not have been a bird after all, scientists say.
科学家们说，据称是地球上最古老最原始的鸟类的“始祖鸟”可能根本就不是一只鸟。
Archaeopteryx has a hallowed place in science, long hailed as not just the first bird but as one of the clearest examples of evolution in action.
“始祖鸟”在科学界有着神圣的地位，长久以来不仅被致敬为第一只鸟，同时也被看作动作进化史上最聪明的例子。

The analysis, published in Thursday's issue of the journal Nature, classifies Archaeopteryx back into the bird category.
NPR: New Study Restores Famed Fossil To "Bird" Branch
Widely pegged as the earliest known bird, Archaeopteryx's status was called into question two years ago by Chinese scientists.
NPR: New Study Restores Famed Fossil To "Bird" Branch
Fossil discoveries of feathered dinosaurs in northeastern China over the past two decades have challenged Archaeopteryx's place in bird evolution.
NPR: New Study Restores Famed Fossil To "Bird" Branch

any of several extinct primitive birds constituting the genus Archaeopteryx, esp A. lithographica, which occurred in Jurassic times and had teeth, a long tail, well-developed wings, and a body covering of feathers