In 2006, Makovicky and Mark Norell of the AMNH incorporated Chinnery's analysis into their own and also added Yamaceratops, although they were not able to include Yinlong.
Makovicky i Mark Norell su 2006. inkorporirali Chinneryjinu analizu u svoju vlastitu i također su dodali rod Yamaceratops, mada nisu mogli uključiti i rod Yinlong.