董枝明
Tianchisaurus (meaning "heavenly pool lizard"), also spelt Tianchiasaurus, is a genus of ankylosaurian dinosaur from the middle Jurassic Period (Bajocian–Bathonian stages) Toutunhe Formation of China. If it actually belongs to the family Ankylosauridae as proposed by Dong Zhiming, it would be the earliest member of that family. Unlike other ankylosaurids, it lacked a bony club at the tip of its tail.