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A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan

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 the Yezo Group in Hobetsu area of Mukawa town in Hokkaido, Japan. Kamuysaurus belongs to the sub-clade of Hadrosaurinae...

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Autores principales: Kobayashi, Yoshitsugu, Nishimura, Tomohiro, Takasaki, Ryuji, Chiba, Kentaro, Fiorillo, Anthony R., Tanaka, Kohei, Chinzorig, Tsogtbaatar, Sato, Tamaki, Sakurai, Kazuhiko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6728324/
https://www.ncbi.nlm.nih.gov/pubmed/31488887
http://dx.doi.org/10.1038/s41598-019-48607-1
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author Kobayashi, Yoshitsugu
Nishimura, Tomohiro
Takasaki, Ryuji
Chiba, Kentaro
Fiorillo, Anthony R.
Tanaka, Kohei
Chinzorig, Tsogtbaatar
Sato, Tamaki
Sakurai, Kazuhiko
author_facet Kobayashi, Yoshitsugu
Nishimura, Tomohiro
Takasaki, Ryuji
Chiba, Kentaro
Fiorillo, Anthony R.
Tanaka, Kohei
Chinzorig, Tsogtbaatar
Sato, Tamaki
Sakurai, Kazuhiko
author_sort Kobayashi, Yoshitsugu
collection PubMed
description 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 the Yezo Group in Hobetsu area of Mukawa town in Hokkaido, Japan. Kamuysaurus belongs to the sub-clade 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 supracranial 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 clade of Kamuysaurus, Laiyangosaurus, and Kerberosaurus may have dispersed into Asia prior to the late Campanian and the potential endemism of this clade 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.
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spelling pubmed-67283242019-09-18 A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan Kobayashi, Yoshitsugu Nishimura, Tomohiro Takasaki, Ryuji Chiba, Kentaro Fiorillo, Anthony R. Tanaka, Kohei Chinzorig, Tsogtbaatar Sato, Tamaki Sakurai, Kazuhiko Sci Rep Article 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 the Yezo Group in Hobetsu area of Mukawa town in Hokkaido, Japan. Kamuysaurus belongs to the sub-clade 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 supracranial 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 clade of Kamuysaurus, Laiyangosaurus, and Kerberosaurus may have dispersed into Asia prior to the late Campanian and the potential endemism of this clade 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. Nature Publishing Group UK 2019-09-05 /pmc/articles/PMC6728324/ /pubmed/31488887 http://dx.doi.org/10.1038/s41598-019-48607-1 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Kobayashi, Yoshitsugu
Nishimura, Tomohiro
Takasaki, Ryuji
Chiba, Kentaro
Fiorillo, Anthony R.
Tanaka, Kohei
Chinzorig, Tsogtbaatar
Sato, Tamaki
Sakurai, Kazuhiko
A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan
title A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan
title_full A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan
title_fullStr A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan
title_full_unstemmed A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan
title_short A New Hadrosaurine (Dinosauria: Hadrosauridae) from the Marine Deposits of the Late Cretaceous Hakobuchi Formation, Yezo Group, Japan
title_sort new hadrosaurine (dinosauria: hadrosauridae) from the marine deposits of the late cretaceous hakobuchi formation, yezo group, japan
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6728324/
https://www.ncbi.nlm.nih.gov/pubmed/31488887
http://dx.doi.org/10.1038/s41598-019-48607-1
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