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Experts are still unsure about the ancestry of pterosaurs. They are currently classified as belonging to a group of reptiles known as archosaurs, which include crocodiles, dinosaurs and birds.
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专家学者对于翼龙究竟如何演进而来仍然没有定论。牠们目前被分类归在祖龙类,这一种爬虫类包括鳄鱼、恐龙和鸟类。
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