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A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan
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| Title: | A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan |
| Authors: | Kobayashi, Yoshitsugu Browse this author →KAKEN DB | | Nishimura, Tomohiro Browse this author | | Takasaki, Ryuji Browse this author | | Chiba, Kentaro Browse this author | | Fiorillo, Anthony R. Browse this author | | Tanaka, Kohei Browse this author | | Chinzorig, Tsogtbaatar Browse this author | | Sato, Tamaki Browse this author | | Sakurai, Kazuhiko Browse this author |
| Issue Date: | 5-Sep-2019 |
| Publisher: | Nature Publishing Group |
| Journal Title: | Scientific reports |
| Volume: | 9 |
| Start Page: | 12389 |
| Publisher DOI: | 10.1038/s41598-019-48607-1 |
| Abstract: | A nearly complete skeleton of a new hadrosaurid, Kamuysaurus japonicus gen. et sp. nov., was discovered from the outer shelf deposits of the Upper Cretaceous Hakobuchi Formation of theYezo Group in Hobetsu area of Mukawa town in Hokkaido, Japan. Kamuysaurus belongs to the sub-Glade of Hadrosaurinae, Edmontosaurini, and forms a monophyly with Laiyangosaurus and Kerberosaurus from the northern Far East. Kamuysaurus has a long anterior platform for the nasofrontal sutural surface, which may indicate the presence of a small supracrania I crest, similar to a sub-adult form of Brachylophosaurus based on the extension of the nasofrontal sutural surface. The Dispersal Extinction Cladogenesis analysis with the 50% Majority Rule consensus tree suggests that the Glade of Kamuysaurus, Laiyangosaurus, and Kerberosaurus may have dispersed into Asia prior to the late Campanian and the potential endemism of this Glade during the late Campanian and early Maastrichtian in the northern Far East. The results of both Dispersal Extinction Cladogenesis and Ancestral State Reconstruction analyses imply that the marine-influenced environment in North America during the Campanian may have played an important role for the hadrosaurid diversification in its early evolutionary history. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/76043 |
| Appears in Collections: | 総合博物館 (The Hokkaido University Museum) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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