Earth:Khuren Dukh Formation
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| Khuren Dukh Formation Stratigraphic range: Early Cretaceous (Aptian–Albian),[1] 119.7–100 Ma | |
|---|---|
| Type | Geological formation |
| Sub-units | Lower, Middle & Upper Members |
| Underlies | Terrace deposit, Basalt |
| Overlies | Khalzan Uul Formation, Basement |
| Thickness | Over 100 m (330 ft) |
| Lithology | |
| Primary | Sandstone, conglomerate, siltstone, mudstone |
| Location | |
| Coordinates | [ ⚑ ] : 45°54′N 108°24′E / 45.9°N 108.4°E |
| Paleocoordinates | [ ⚑ ] 49°18′N 100°12′E / 49.3°N 100.2°E |
| Region | Dornogovi Province |
| Country | Mongolia |
| Extent | Choyr Basin |
  Khuren Dukh Formation (Mongolia) | |
The Khuren Dukh Formation, also known as the Khukhtyk Formation, Khukhteeg Formation, or Hühteeg Svita, (Mongolian: Хөхтээг формаци, Khökhteeg Formatsi), is a geological formation in Mongolia whose strata date back to the Aptian–Albian ages of the Early Cretaceous.[2][3] Dinosaur remains are among the fossils that have been recovered from the formation.[4]
Vertebrate paleofauna
Dinosaurs
| Dinosaurs of the Khuren Dukh Formation (Hühteeg Svita) | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Altirhinus | A. kurzanovi | "Complete skull, partial skull, associated postcrania, several individuals."[5] | A hadrosauroid ornithopod |  | ||
| Choyrodon[6] | C. barsboldi | Partial skull, cervical ribs | A hadrosauroid ornithopod |  | ||
| Iguanodon | I. orientalis | An indeterminate Iguanodont. A referred skull was reclassified as Altirhinus. | ||||
| Harpymimus[7] | H. okladnikovi | Partial skeleton | An ornithomimosaur | .jpg) | ||
| Zavacephale[8] | Z. rinpoche | Skull and partial articulated skeleton | An early pachycephalosaur |  | ||
Choristoderes
| Choristoderes of the Khuren Dukh Formation (Hühteeg Svita) | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Khurendukhosaurus | K. orlovi, Indeterminate | Partial skeleton | Long-necked choristodere |  | ||
| Tchoiria | T. namsarai | Crocodile-like neochoristoderan. | ||||
Color key
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Notes Uncertain or tentative taxa are in small text; |
See also
- List of dinosaur-bearing rock formations
References
- ↑ Hasegawa, Hitoshi; Ando, Hisao; Hasebe, Noriko; Ichinnorov, Niiden; Ohta, Tohru; Hasegawa, Takashi; Yamamoto, Masanobu; Li, Gang et al. (2018-02-27). "Depositional ages and characteristics of Middle– Upper Jurassic and Lower Cretaceous lacustrine deposits in southeastern Mongolia" (in en). Island Arc 27 (3). doi:10.1111/iar.12243. ISSN 1038-4871. Bibcode: 2018IsArc..27E2243H.
- ↑ Nosova, Natalya; Kostina, Elena (2022-09-01). "New findings of the female reproductive structures of Umaltolepis Krassilov and associated leaves of Pseudotorellia Florin in the Lower Cretaceous of Mongolia". Review of Palaeobotany and Palynology 304. doi:10.1016/j.revpalbo.2022.104696. ISSN 0034-6667. Bibcode: 2022RPaPa.30404696N. https://www.sciencedirect.com/science/article/pii/S003466672200094X.
- ↑ Nichols et al., 2006
- ↑ Weishampel et al., 2004, pp.563-570
- ↑ "Table 19.1," in Weishampel, et al. (2004). Page 415.
- ↑ Gates et al., 2018
- ↑ Barsbold & Perle, 1984
- ↑ Chinzorig, Tsogtbaatar; Takasaki, Ryuji; Yoshida, Junki; Tucker, Ryan T.; Buyantegsh, Batsaikhan; Mainbayar, Buuvei; Tsogtbaatar, Khishigjav; Zanno, Lindsay E. (September 17, 2025). "A domed pachycephalosaur from the early Cretaceous of Mongolia" (in en). Nature: 1–8. doi:10.1038/s41586-025-09213-6. ISSN 1476-4687.
Bibliography
- Gates, Terry A.; Tsogtbaatar, Khishigjav; Zanno, Lindsay E.; Chinzorig, Tsogtbaatar; Watabe, Mahito (2018), "A new iguanodontian (Dinosauria: Ornithopoda) from the Early Cretaceous of Mongolia", PeerJ 6, doi:10.7717/peerj.5300, PMID 30083450
- Nichols, Douglas J.; Matsukawa, Masaki; Ito, Makoto (2006), "Palynology and age of some Cretaceous nonmarine deposits in Mongolia and China", Cretaceous Research 27 (2): 241–251, doi:10.1016/j.cretres.2005.11.004, ISSN 0195-6671, Bibcode: 2006CrRes..27..241N
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, https://books.google.com/books?id=vtZFDb_iw40C, retrieved 2019-02-21
- Barsbold, R.; Perle, A. (1984), "On first new find of a primitive orithomimosaur from the Cretaceous of the MPR", Paleontologicheskii Zhurnal 2: 121–123
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