Dinosaur: "Hironosaurus"
Cretaceous: 89.8–86.3 Ma
Sources
Material: Tooth, vertebra (cervical ?).
References: Matsukawa, M., & Obata, I. (1994). Dinosaurs and sedimentary environments in the Japanese Cretaceous: a contribution to dinosaur facies in Asia based on molluscan palaeontology and stratigraphy.
