Khuren Dukh Formation

The Khuren Dukh Formation, also known as the Hühteeg Svita, (Mongolian: Хөхтээг формаци, Khökhteeg Formatsi) is a geological formation in Mongolia whose strata date back to the middle to late Albian.[1] Dinosaur remains are among the fossils that have been recovered from the formation.[2]

Khuren Dukh Formation Stratigraphic range: Mid-Late Albian 107–100 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	45.9°N 108.4°E
Approximate paleocoordinates	49.3°N 100.2°E
Region	Dornogovi Province
Country	Mongolia
Extent	Choyr Basin
Khuren Dukh Formation (Mongolia)

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."[3]	A hadrosauroid ornithopod
Choyrodon[4]	C. barsboldi			Partial skull, cervical ribs	A hadrosauroid ornithopod
Iguanodon	I. orientalis				An indeterminate Iguanodont. A referred skull was reclassified as Altirhinus.
Harpymimus[5]	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.

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

See also

• List of dinosaur-bearing rock formations

References

1. Nichols et al., 2006
2. Weishampel et al., 2004, pp.563-570
3. "Table 19.1," in Weishampel, et al. (2004). Page 415.
4. Gates et al., 2018
5. Barsbold & Perle, 1984

Bibliography

• Gates, Terry A.; Khishigjav Tsogtbaatar; Lindsay E. Zanno; Tsogtbaatar Chinzorig, and Mahito Watabe. 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.; Masaki Matsukawa, and Makoto Ito. 2006. Palynology and age of some Cretaceous nonmarine deposits in Mongolia and China. Cretaceous Research 27. 241–251. doi:10.1016/j.cretres.2005.11.004 ISSN 0195-6671
• Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
• Barsbold, R., and A. Perle. 1984. On first new find of a primitive orithomimosaur from the Cretaceous of the MPR. Paleontologicheskii zhurnal 2. 121-123.