Dinosaurs A to Z
Hadrosauridae

Yamatosaurus izanagii

"Yamato reptile"

Generic ornithopod body-plan outline
You 1.8 m (5.9 ft) tall
Yamatosaurus 9 m (29.5 ft) long
as long as 6 people standing fingertip to fingertip
generic ornithopod body plan, scaled to length — not a silhouette of Yamatosaurus
Length
9 m (29.5 ft)
Period
Late Cretaceous (71.94–71.69 Mya)
Place
Japan
Food
Herbivore
Clade
Hadrosauridae Dinosauria Ornithischia Cerapoda Ornithopoda Iguanodontia Duck-billed dinosaurs with tooth batteries.

Yamatosaurus (meaning “Yamato reptile”) is a genus of basal hadrosaurid from the Late Cretaceous (Maastrichtian)-aged Kita-Ama Formation of Awaji Island, Japan. The genus contains a single species, Yamatosaurus izanagii.

What we know

  • Named by Kobayashi et al. 2021.
  • Fossils found in Japan.

What we guess

The reconstruction notes for Yamatosaurus — soft tissue, color, behavior — haven't been written up yet. Only the recorded basics above are filled in so far.