Scientists Found the Largest Dinosaur from Japan

Scientists Found the Largest Dinosaur from Japan

Back in 2013, scientists found an incomplete tail of a dinosaur in the Hobetsu district of Mukawa Town, Hokkaido, Japan. This dinosaur was then named Mukawaryu. Well, after many years, more excavations have revealed an almost completed skeleton of the dinosaur. With this marvelous specimen, the researchers were able to learn that the Mukawaryu is a new genus and species of a hadrosaurid and it was given a new name: Kamuysaurus japonicus (the deity of Japanese dinosaurs).

Kamuysaurus japonicus has three different characteristics for a dinosaur in the Edmontosaurini clade:

“[T]he low position of the cranial bone notch, the short ascending process of the jaw bone, and the anterior inclination of the neural spines of the sixth to twelfth dorsal vertebrae.”

Thanks to a histological study, it is thought that this specimen was an adult with a minimum age of 9 years, was 8 meters long, and weighed either 4 tons or 5.3 tons. The weight variation depends on how many legs it used, 2 or 4. In addition, there’s proof that the species had a crest related to the subadult Brachylophosaurus in North America.

Researchers also found data to suggest that hadrosaurids favored coastal areas as well as more information about “the origin of the Edmontosaurini clade and how it might have migrated.”

The picture above is a reconstruction of Kamuysaurus japonicus and the image you see below is the fossilized skeleton of the dinosaur.


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