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| {{Automatic taxobox | {{Automatic taxobox | ||
| | fossil_range = ] | | fossil_range = ]<br>~{{fossil range|70}} | ||
| | image = | | image = | ||
| | image_caption = | | image_caption = | ||
| | taxon = Nemegtonykus | | taxon = Nemegtonykus | ||
| | authority = Lee ''et al.'' |
| authority = Lee ''et al.'' ] | ||
| | type_species = {{extinct}}'''''Nemegtonykus citus''''' | | type_species = {{extinct}}'''''Nemegtonykus citus''''' | ||
| | type_species_authority = Lee ''et al.'' |
| type_species_authority = Lee ''et al.'' 2019 | ||
| | subdivision_ranks = | | subdivision_ranks = | ||
| | subdivision = | | subdivision = | ||
| }} | }} | ||
| '''''Nemegtonykus''''' (meaning "Nemegt claw" after the ] |
'''''Nemegtonykus''''' (meaning "Nemegt claw", named after the ] in which the ] fossils were found) is a genus of ] ] from the ] in ]. The ] and only species is '''''Nemegtonykus citus'''''. It is only the second alvarezsaur known from the Nemegt Formation, the other being '']''.<ref name="Lee2019">{{cite journal|first=Sungjin |last=Lee |first2=Jin-Young |last2=Park |first3=Yuong-Nam |last3=Lee |first4=Su-Hwan |last4=Kim |first5=Junchang |last5=Lü |first6=Rinchen |last6=Barsbold |first7=Khishigjav |last7=Tsogtbaatar |year=2019 |title= A new alvarezsaurid dinosaur from the Nemegt Formation of Mongolia |journal=Scientific Reports |volume=9 |page=15493 |doi=10.1038/s41598-019-52021-y |url=https://www.nature.com/articles/s41598-019-52021-y}}</ref> | ||
| ==Discovery== | == Discovery == | ||
| In 2008, the Korea-Mongolia International Dinosaur Expedition at the Altan Uul III site in the ] excavated a dense concentration of theropod skeletons. Some of these were of '']'' as well as a yet undescribed ] but three were of Alvarezsauridae. One specimen, MPC-D 100/206, was considered cf. ''Mononykus'' sp. but the other two represented a species new to science.<ref name="Lee2019"/> | In 2008, the Korea-Mongolia International Dinosaur Expedition at the Altan Uul III site in the ] excavated a dense concentration of theropod skeletons. Some of these were of '']'' as well as a yet undescribed ] but three were of Alvarezsauridae. One specimen, MPC-D 100/206, was considered cf. ''Mononykus'' sp. but the other two represented a species new to science.<ref name="Lee2019"/> | ||
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| The ], '''MPC-D 100/203''', was found in a layer of the Nemegt Formation (perhaps late ] - early ]). It consists of a partial skeleton lacking the skull. It contains six back vertebrae, two sacral vertebrae, twenty-one tail vertebrae, five ribs, the left shoulder girdle, the left ], parts of other pelvic bones, the left hindlimb and the right shinbone. The left hindlimb and the tail were articulated. The other bones were associated on a small surface.<ref name="Lee2019"/> | The ], '''MPC-D 100/203''', was found in a layer of the Nemegt Formation (perhaps late ] - early ]). It consists of a partial skeleton lacking the skull. It contains six back vertebrae, two sacral vertebrae, twenty-one tail vertebrae, five ribs, the left shoulder girdle, the left ], parts of other pelvic bones, the left hindlimb and the right shinbone. The left hindlimb and the tail were articulated. The other bones were associated on a small surface.<ref name="Lee2019"/> | ||
| ==References== | == References == | ||
| {{reflist}} | {{reflist}} | ||
| {{Theropoda|M.}} | {{Theropoda|M.}} | ||
| {{Portal bar|Dinosaurs|Asia}} | {{Portal bar|Dinosaurs|Cretaceous|Prehistory of Asia}} | ||
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| {{theropod-stub}} | {{theropod-stub}} | ||
Revision as of 12:44, 4 November 2019
| Nemegtonykus Temporal range: Maastrichtian ~70 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Family: | †Alvarezsauridae |
| Subfamily: | †Parvicursorinae |
| Genus: | †Nemegtonykus Lee et al. 2019 |
| Type species | |
| †Nemegtonykus citus Lee et al. 2019 | |
Nemegtonykus (meaning "Nemegt claw", named after the Nemegt Formation in which the holotype fossils were found) is a genus of alvarezsaurid dinosaur from the Nemegt Formation in Mongolia. The type and only species is Nemegtonykus citus. It is only the second alvarezsaur known from the Nemegt Formation, the other being Mononykus.
Discovery
In 2008, the Korea-Mongolia International Dinosaur Expedition at the Altan Uul III site in the Gobi Desert excavated a dense concentration of theropod skeletons. Some of these were of Gobiraptor as well as a yet undescribed oviraptorid but three were of Alvarezsauridae. One specimen, MPC-D 100/206, was considered cf. Mononykus sp. but the other two represented a species new to science.
In 2019, the type species Nemegtonykus citus was named and described by Lee Sungjin, Park Jin-Young, Lee Yuong-Nam, Kim Su-Hwan, Lü Junchang, Rinchen Barsbold and Khishigjav Tsogtbaatar. The generic name combines a reference to the Nemegt with a Greek ὄνυξ, onyx, "claw", analogous to Mononykus. The specific name means "the fast one" in Latin.
The holotype, MPC-D 100/203, was found in a layer of the Nemegt Formation (perhaps late Campanian - early Maastrichtian). It consists of a partial skeleton lacking the skull. It contains six back vertebrae, two sacral vertebrae, twenty-one tail vertebrae, five ribs, the left shoulder girdle, the left pubic bone, parts of other pelvic bones, the left hindlimb and the right shinbone. The left hindlimb and the tail were articulated. The other bones were associated on a small surface.
References
- ^ Lee, Sungjin; Park, Jin-Young; Lee, Yuong-Nam; Kim, Su-Hwan; Lü, Junchang; Barsbold, Rinchen; Tsogtbaatar, Khishigjav (2019). "A new alvarezsaurid dinosaur from the Nemegt Formation of Mongolia". Scientific Reports. 9: 15493. doi:10.1038/s41598-019-52021-y.
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