Yamaceratops dorngobiensis
Yamanasaurus lojaensis
Yamatosaurus izanagii
Yandusaurus hongheensis
Yangchuanosaurus shangyouensis
Yaverlandia bitholus
Yehuecauhceratops mudei
Yi qi
Yimenosaurus youngi
Yingshanosaurus jichuanensis
Yinlong downsi
Yixianosaurus longimanus
Yizhousaurus sunae
Yongjinglong datangi
Yuanmousaurus jiangyiensis
Yueosaurus tiantaiensis
Yulong mini
Yunganglong datongensis
Yungmenglong ruyangensis
Yunnanosaurus huangi
Yunyangosaurus puanensis
Yurgovuchia doellingi
Yutyrannus huali
