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archosaur 英/ ?ɑ?k?s?? / 美/ ?ɑ?rk??s??r / 1 ?龙类 补充：作者发现最近的研究显示植龙目（Phytosauria）不属于主龙类（Archosaurs），系统位置可能是主龙类（Archosaurs）的姐妹群。 2 ?古龙类 ... 车轮螺超科 ARCHITECTONICOIDEA 古龙亚纲 ARCHOSAURIA 古龙类 Archosaurs ...
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About 20 percent of all Marine families went extinct, as well as most mammal-like creatures, many large amphibians, and all non-dinosaur archosaurs. 约有20%的海生群落以及多数类似哺乳类的生物，很多大型的两栖动物，和所有的非恐龙的祖龙都灭绝了。 - 2
Until this disaster, mammal-like creatures known as therapsids were actually more numerous than the ancestors of the dinosaurs, known as archosaurs. 此次大灭绝之前，兽孔目爬行动物（一种类哺乳动物）的数目远远多于恐龙的祖先祖龙。 - 3
The findings could help to explain why the archosaurs — the ancestors of crocodilians, dinosaurs, and modern birds — emerged to dominate the world some 250 million years ago. 初龙是鳄鱼、恐龙类以及和现代鸟类的始祖。这次的发现有助于解释2.5亿年前初龙在世界范围内大规模存在的原因。
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