Thescelosauridae is a clade of neornithischians from the Cretaceous of East Asia and North America. The group was originally used as a name by Charles M. Sternberg in 1937, but was not formally define

Jeholosauridae is an extinct group of herbivorous neornithischian dinosaurs from the Cretaceous Period. The family was first proposed by Han et al. in 2012. The jeholosaurids were defined as all neorn