A new ankylosaurid from the Upper Cretaceous Nemegt Formation of Mongolia and implications for paleoecology of armoured dinosaurs
Abstract A new ankylosaurid dinosaur, Tarchia tumanovae sp. nov., has been recovered from the Upper Cretaceous Nemegt Formation of Mongolia. It includes a well-preserved skull, dorsal, sacral, caudal vertebrae, sixteen dorsal ribs, ilia, a partial ischium, free osteoderms, and a tail club. The squam...
Guardado en:
| Autores principales: | , , , , , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Nature Portfolio
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/c626c0a95dc549069a048e25a040595f |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:doaj.org-article:c626c0a95dc549069a048e25a040595f |
|---|---|
| record_format |
dspace |
| spelling |
oai:doaj.org-article:c626c0a95dc549069a048e25a040595f2021-11-28T12:20:57ZA new ankylosaurid from the Upper Cretaceous Nemegt Formation of Mongolia and implications for paleoecology of armoured dinosaurs10.1038/s41598-021-02273-42045-2322https://doaj.org/article/c626c0a95dc549069a048e25a040595f2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02273-4https://doaj.org/toc/2045-2322Abstract A new ankylosaurid dinosaur, Tarchia tumanovae sp. nov., has been recovered from the Upper Cretaceous Nemegt Formation of Mongolia. It includes a well-preserved skull, dorsal, sacral, caudal vertebrae, sixteen dorsal ribs, ilia, a partial ischium, free osteoderms, and a tail club. The squamosal horns of T. tumanovae are divided into two layers, the external dermal layer and the underlying squamosal horn proper. The irregular ventral margin of the base of the upper dermal layer may represent a resorption surface, suggesting that the squamosal horns of some ankylosaurids underwent extreme ontogenetic remodeling. Localized pathologies on the dorsosacral ribs and the tail provide evidence of agonistic behaviour. The tail club knob asymmetry of T. tumanovae resulted from restricted bone growth due to tail club strikes. Furthermore, T. tumanovae had an anteriorly protruded shovel-shaped beak, which is a morphological character of selective feeders. Ankylosaurid diets shifted from low-level bulk feeding to selective feeding during the Baruungoyot and the Nemegt “age” (middle Campanian-lower Maastrichtian). This ankylosaurid niche shifting might have been a response to habitat change and competition with other bulk-feeding herbivores.Jin-Young ParkYuong-Nam LeeYoshitsugu KobayashiLouis L. JacobsRinchen BarsboldHang-Jae LeeNamsoo KimKyo-Young SongMichael J. PolcynNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
Medicine R Science Q |
| spellingShingle |
Medicine R Science Q Jin-Young Park Yuong-Nam Lee Yoshitsugu Kobayashi Louis L. Jacobs Rinchen Barsbold Hang-Jae Lee Namsoo Kim Kyo-Young Song Michael J. Polcyn A new ankylosaurid from the Upper Cretaceous Nemegt Formation of Mongolia and implications for paleoecology of armoured dinosaurs |
| description |
Abstract A new ankylosaurid dinosaur, Tarchia tumanovae sp. nov., has been recovered from the Upper Cretaceous Nemegt Formation of Mongolia. It includes a well-preserved skull, dorsal, sacral, caudal vertebrae, sixteen dorsal ribs, ilia, a partial ischium, free osteoderms, and a tail club. The squamosal horns of T. tumanovae are divided into two layers, the external dermal layer and the underlying squamosal horn proper. The irregular ventral margin of the base of the upper dermal layer may represent a resorption surface, suggesting that the squamosal horns of some ankylosaurids underwent extreme ontogenetic remodeling. Localized pathologies on the dorsosacral ribs and the tail provide evidence of agonistic behaviour. The tail club knob asymmetry of T. tumanovae resulted from restricted bone growth due to tail club strikes. Furthermore, T. tumanovae had an anteriorly protruded shovel-shaped beak, which is a morphological character of selective feeders. Ankylosaurid diets shifted from low-level bulk feeding to selective feeding during the Baruungoyot and the Nemegt “age” (middle Campanian-lower Maastrichtian). This ankylosaurid niche shifting might have been a response to habitat change and competition with other bulk-feeding herbivores. |
| format |
article |
| author |
Jin-Young Park Yuong-Nam Lee Yoshitsugu Kobayashi Louis L. Jacobs Rinchen Barsbold Hang-Jae Lee Namsoo Kim Kyo-Young Song Michael J. Polcyn |
| author_facet |
Jin-Young Park Yuong-Nam Lee Yoshitsugu Kobayashi Louis L. Jacobs Rinchen Barsbold Hang-Jae Lee Namsoo Kim Kyo-Young Song Michael J. Polcyn |
| author_sort |
Jin-Young Park |
| title |
A new ankylosaurid from the Upper Cretaceous Nemegt Formation of Mongolia and implications for paleoecology of armoured dinosaurs |
| title_short |
A new ankylosaurid from the Upper Cretaceous Nemegt Formation of Mongolia and implications for paleoecology of armoured dinosaurs |
| title_full |
A new ankylosaurid from the Upper Cretaceous Nemegt Formation of Mongolia and implications for paleoecology of armoured dinosaurs |
| title_fullStr |
A new ankylosaurid from the Upper Cretaceous Nemegt Formation of Mongolia and implications for paleoecology of armoured dinosaurs |
| title_full_unstemmed |
A new ankylosaurid from the Upper Cretaceous Nemegt Formation of Mongolia and implications for paleoecology of armoured dinosaurs |
| title_sort |
new ankylosaurid from the upper cretaceous nemegt formation of mongolia and implications for paleoecology of armoured dinosaurs |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/c626c0a95dc549069a048e25a040595f |
| work_keys_str_mv |
AT jinyoungpark anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT yuongnamlee anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT yoshitsugukobayashi anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT louisljacobs anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT rinchenbarsbold anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT hangjaelee anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT namsookim anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT kyoyoungsong anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT michaeljpolcyn anewankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT jinyoungpark newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT yuongnamlee newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT yoshitsugukobayashi newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT louisljacobs newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT rinchenbarsbold newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT hangjaelee newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT namsookim newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT kyoyoungsong newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs AT michaeljpolcyn newankylosauridfromtheuppercretaceousnemegtformationofmongoliaandimplicationsforpaleoecologyofarmoureddinosaurs |
| _version_ |
1718408041800400896 |