First Ornithomimid (Theropoda, Ornithomimosauria) from the Upper Cretaceous Djadokhta Formation of Tögrögiin Shiree, Mongolia
Abstract The Upper Cretaceous Djadokhta Formation has been intensively surveyed for its fossil vertebrate fauna for nearly a century. Amongst other theropods, dromaeosaurids and parvicursorines are common in the formation, but ornithomimosaurs are extremely rare. A new ornithomimosaur material was d...
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| Format: | Article |
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Nature Portfolio
2017-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-05272-6 |
| _version_ | 1818344270444101632 |
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| author | Tsogtbaatar Chinzorig Yoshitsugu Kobayashi Khishigjav Tsogtbaatar Philip J. Currie Mahito Watabe Rinchen Barsbold |
| author_facet | Tsogtbaatar Chinzorig Yoshitsugu Kobayashi Khishigjav Tsogtbaatar Philip J. Currie Mahito Watabe Rinchen Barsbold |
| author_sort | Tsogtbaatar Chinzorig |
| collection | DOAJ |
| description | Abstract The Upper Cretaceous Djadokhta Formation has been intensively surveyed for its fossil vertebrate fauna for nearly a century. Amongst other theropods, dromaeosaurids and parvicursorines are common in the formation, but ornithomimosaurs are extremely rare. A new ornithomimosaur material was discovered from the Djadokhta Formation, represented by eolian deposits, of the Tögrögiin Shiree locality, Mongolia. This is only the third ornithomimosaur specimen reported from this formation, and includes the astragalus, the calcaneum, the third distal tarsal, and a complete pes. The new material is clearly belonged to Ornithomimidae by its arctometatarsalian foot condition and has the following unique characters; unevenly developed pair of concavities of the third distal tarsal, curved contacts between the proximal ends of second and fourth metatarsals, the elongate fourth digit, and a laterally inclined medial condyle on phalanx IV-1. These diagnostic characters of the Djadokhtan ornithomimosaur indicate that this is a new taxon. Our phylogenetic analysis supports three clades within derived ornithomimosaurs, and the new taxon is placed a member of the derived ornithomimosaurs. The present specimen is the first ornithomimid record from eolian Tögrögiin Shiree locality, and is indicative of their capability to adapt to arid environments. |
| first_indexed | 2024-12-13T16:43:49Z |
| format | Article |
| id | doaj.art-ec04f56c249e4838808b8f7e564a478a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-13T16:43:49Z |
| publishDate | 2017-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-ec04f56c249e4838808b8f7e564a478a2022-12-21T23:38:13ZengNature PortfolioScientific Reports2045-23222017-07-017111410.1038/s41598-017-05272-6First Ornithomimid (Theropoda, Ornithomimosauria) from the Upper Cretaceous Djadokhta Formation of Tögrögiin Shiree, MongoliaTsogtbaatar Chinzorig0Yoshitsugu Kobayashi1Khishigjav Tsogtbaatar2Philip J. Currie3Mahito Watabe4Rinchen Barsbold5Department of Natural History Science, Graduate School of Science, Hokkaido UniversityHokkaido University Museum, Hokkaido UniversityDivision of Vertebrate Paleontology, Institute of Paleontology and Geology, Mongolian Academy of SciencesBiological Sciences, University of AlbertaSchool of International Liberal Studies, Waseda UniversityDivision of Vertebrate Paleontology, Institute of Paleontology and Geology, Mongolian Academy of SciencesAbstract The Upper Cretaceous Djadokhta Formation has been intensively surveyed for its fossil vertebrate fauna for nearly a century. Amongst other theropods, dromaeosaurids and parvicursorines are common in the formation, but ornithomimosaurs are extremely rare. A new ornithomimosaur material was discovered from the Djadokhta Formation, represented by eolian deposits, of the Tögrögiin Shiree locality, Mongolia. This is only the third ornithomimosaur specimen reported from this formation, and includes the astragalus, the calcaneum, the third distal tarsal, and a complete pes. The new material is clearly belonged to Ornithomimidae by its arctometatarsalian foot condition and has the following unique characters; unevenly developed pair of concavities of the third distal tarsal, curved contacts between the proximal ends of second and fourth metatarsals, the elongate fourth digit, and a laterally inclined medial condyle on phalanx IV-1. These diagnostic characters of the Djadokhtan ornithomimosaur indicate that this is a new taxon. Our phylogenetic analysis supports three clades within derived ornithomimosaurs, and the new taxon is placed a member of the derived ornithomimosaurs. The present specimen is the first ornithomimid record from eolian Tögrögiin Shiree locality, and is indicative of their capability to adapt to arid environments.https://doi.org/10.1038/s41598-017-05272-6 |
| spellingShingle | Tsogtbaatar Chinzorig Yoshitsugu Kobayashi Khishigjav Tsogtbaatar Philip J. Currie Mahito Watabe Rinchen Barsbold First Ornithomimid (Theropoda, Ornithomimosauria) from the Upper Cretaceous Djadokhta Formation of Tögrögiin Shiree, Mongolia Scientific Reports |
| title | First Ornithomimid (Theropoda, Ornithomimosauria) from the Upper Cretaceous Djadokhta Formation of Tögrögiin Shiree, Mongolia |
| title_full | First Ornithomimid (Theropoda, Ornithomimosauria) from the Upper Cretaceous Djadokhta Formation of Tögrögiin Shiree, Mongolia |
| title_fullStr | First Ornithomimid (Theropoda, Ornithomimosauria) from the Upper Cretaceous Djadokhta Formation of Tögrögiin Shiree, Mongolia |
| title_full_unstemmed | First Ornithomimid (Theropoda, Ornithomimosauria) from the Upper Cretaceous Djadokhta Formation of Tögrögiin Shiree, Mongolia |
| title_short | First Ornithomimid (Theropoda, Ornithomimosauria) from the Upper Cretaceous Djadokhta Formation of Tögrögiin Shiree, Mongolia |
| title_sort | first ornithomimid theropoda ornithomimosauria from the upper cretaceous djadokhta formation of togrogiin shiree mongolia |
| url | https://doi.org/10.1038/s41598-017-05272-6 |
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