archaeopteryx
柯林斯词典
1. N 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 始祖鸟; 侏罗纪时代鸟类，有齿及长尾，羽翼丰满
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