Misplaced Pages

Khuren Dukh Formation
Stratigraphic range: Early Cretaceous (Aptian–Albian), 119.7–100 Ma PreꞒ Ꞓ O S D C P T J K Pg N
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 / 45.9; 108.4
Approximate paleocoordinates	49°18′N 100°12′E / 49.3°N 100.2°E / 49.3; 100.2
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. Dinosaur remains are among the fossils that have been recovered from the formation.

Vertebrate paleofauna

Dinosaurs

The earliest record of Pachycephalosauria.

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."	A hadrosauroid ornithopod
Choyrodon	C. barsboldi			Partial skull, cervical ribs	A hadrosauroid ornithopod
Iguanodon	I. orientalis				An indeterminate Iguanodont. A referred skull was reclassified as Altirhinus.
Harpymimus	H. okladnikovi			Partial skeleton	An ornithomimosaur

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.

See also

• List of dinosaur-bearing rock formations

References

1. Hasegawa, Hitoshi; Ando, Hisao; Hasebe, Noriko; Ichinnorov, Niiden; Ohta, Tohru; Hasegawa, Takashi; Yamamoto, Masanobu; Li, Gang; Erdenetsogt, Bat-Orshikh; Heimhofer, Ulrich; Murata, Takayuki; Shinya, Hironori; Enerel, G.; Oyunjargal, G.; Munkhtsetseg, O. (2018-02-27). "Depositional ages and characteristics of Middle– Upper Jurassic and Lower Cretaceous lacustrine deposits in southeastern Mongolia". Island Arc. 27 (3). Bibcode:2018IsArc..27E2243H. doi:10.1111/iar.12243. ISSN 1038-4871.
2. 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: 104696. Bibcode:2022RPaPa.30404696N. doi:10.1016/j.revpalbo.2022.104696. ISSN 0034-6667.
3. Nichols et al., 2006
4. Weishampel et al., 2004, pp.563-570
5. https://vertpaleo.org/wp-content/uploads/2023/10/2023_SVP_Program-Final-10032023.pdf
6. "Table 19.1," in Weishampel, et al. (2004). Page 415.
7. Gates et al., 2018
8. Barsbold & Perle, 1984

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: e5300, doi:10.7717/peerj.5300, PMC 6078070, 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, Bibcode:2006CrRes..27..241N, doi:10.1016/j.cretres.2005.11.004, ISSN 0195-6671
• 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, 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

• Geologic formations of Mongolia
• Lower Cretaceous Series of Asia
• Cretaceous Mongolia
• Albian Stage
• Sandstone formations
• Mudstone formations
• Lacustrine deposits
• Paleontology in Mongolia
• Dornogovi Province