Restoration map of Hadrosauroidea, a herbivorous dinosaur in which fossil teeth were found (provided by Takumi Yamamoto)
On the 29th, the Goshoura Cretaceous Museum in Amakusa City, Kumamoto Prefecture, announced that it had found two fossil teeth of the herbivorous dinosaur Hadrosauroidea in the stratum about 72 million years ago. “It’s evidence that dinosaurs were widespread in Japan in the late Cretaceous,” the research team said.
When the museum and the Fukui Prefectural Dinosaur Museum (Katsuyama City, Amakusa Prefecture) jointly investigated the coastal formation “Himeura Group Shimotsu Fukae Formation” in Amakusa City in 2018, they found exposed fossil teeth.
Hadrosaurid is a bipedal dinosaur that flourished in the Cretaceous. One of the fossils is 16 mm long and 13 mm wide, and it can be confirmed that it has been worn down by eating vegetation.