Chaoyangsauridae

Yinlong (, meaning "hidden dragon") is a genus of basal ceratopsian dinosaur from the Late Jurassic Period of China. By far the earliest known ceratopsian, it was a small, primarily bipedal herbivore.

Chaoyangsaurus ("Chaoyang lizard") is a genus of marginocephalian dinosaur from the Late Jurassic (about between 150.8 and 145.5 million years ago) of China. Chaoyangsaurus belonged to the Ceratopsia (Greek for "horned faces"). Chaoyangsaurus, like all ceratopsians, was primarily a herbivore.

Xuanhuaceratops (meaning "Xuanhua horned face") is a genus of dinosaur from the Late Jurassic Period. The genus was in 2006 dated to the Tithonian, 150.8-145.5 million years ago. A member of the family Chaoyangsauridae, it was one of the earliest ceratopsians. The fossils were found in the Houcheng Formation of Hebei Province, northeastern China.

Chaoyangsauridae is a family of ceratopsian dinosaurs. They are among the earliest known marginocephalian dinosaurs, with remains dating to about 160 million years ago, during the Late Jurassic period. Members of this group had sharp beaks for snipping off leaves to eat, and a very small frill.

Hualianceratops is a genus of herbivorous ceratopsian dinosaur that lived about 160 million years ago in the Late Jurassic epoch in what is now western China. The single species, H. wucaiwanensis was described in 2015. Its size has been compared to that of a spaniel.