Jainosaurus septentrionalis

Jaklapallisaurus asymmetrica

Janenschia robusta

Jaxartosaurus aralensis

Jeholosaurus shangyuanensis

Jeyawati rugoculus

Jianchangosaurus yixianensis

Jiangjunosaurus junggarensis

Jiangshanosaurus lixianensis

Jiangxisaurus ganzhouensis

Jianianhualong tengi

Jinbeisaurus wangi

Jinfengopteryx elegans

Jingshanosaurus xinwaensis

Jintasaurus meniskus

Jinyunpelta sinensis

Jinzhousaurus yangi

Jiutaisaurus xidiensis

Jobaria tiguidensis

Jubbulpuria tenuis

Judiceratops tigris

Juratyrant langhami

Juravenator starki