芦沟龙（属名：Lukousaurus）的化石发现于中国云南省的下禄丰组，该地年代为早侏㑩纪；化石只有小型头颅骨中的大部分口鼻部，显示出泪腺部位有明显的角状物。

芦沟龙是由杨钟健在1948年所叙述、命名，模式种是尹氏芦沟龙（L. yini）。属名来自于北京附近的芦沟桥，也就是中国抗日战争的开始地点。芦沟龙曾因为与角鼻龙下目的关连性，而被分类为一种兽脚亚目恐龙；也有论点认为牠们跟虚骨龙类有关联。芦沟龙的头颅骨与它的大小相比，相当坚固，而牙齿则被叙述成典型的兽脚亚目牙齿。然而，芦沟龙有可能是种镶嵌踝类主龙，并非恐龙。

Lukousaurus is a taxon based on most of a small skull’s snout, displaying distinctive lachrymal horns, found in the Early Jurassic-age Lower Lufeng Formation, Yunnan, China and was described by Chung Chien Young in 1948. The generic name refers to the Lugou Bridge, lit. “crossroads”, near Beijing, where the Sino-Japanese War started. L. yini is tentatively classified as a theropod dinosaur by some allied to ceratosaurs, by others a coelurosaur. Its skull is rather robust for its size though the teeth were described by the author as typically theropodan. It may, however, be a crurotarsan.