Earth:Shinekhudag Formation

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Shinekhudag Formation
Stratigraphic range: Barremian-Aptian,
~123.8–118.5 Ma
TypeGeological formation
UnderliesKhukhtek Formation[1]
OverliesTsagaantsav Svita
Lithology
PrimarySandstone, argillite, marl, clay
Location
RegionDundgov
CountryMongolia

The Shinekhudag Formation (also known as Shinekhudug Formation, Shinekhudag or Shinekhudukskaya Svita) is a geological formation in Dundgov, Mongolia whose strata date back to the Early Cretaceous. Dinosaur remains have been recovered from it.[2][3] It has classically been considered Aptian-Albian in age. Khand et al. (2000) suggested that the age of formation is Berriasian-Hauterivian based on ostracod biostratigraphy.[4] But, Hasegawa et al. (2018) suggested Shinekhudag Formation was deposited between 123.8 ±2.0 Ma and 118.5 ±0.9 Ma of the Barremian-early Aptian.[5]

Vertebrate paleofauna

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.

Dinosaurs

Trackways of theropods and sauropods have been reported.[6]

Genus Species Location Stratigraphic Position Material Notes Images
Harpymimus[7] H. okladnikovi[7] Khuren Dukh "Partial skull with incomplete skeleton."[8] A primitive ornithomimosaur. 150px
Iguanodon[9] I. orientalis[9] Khamarin-Khural "Fragmentary skeleton."[9] A dubious iguanodont of uncertain affinities.[10][11]
Psittacosaurus sp. Indeterminate Khuren Dukh "Partial skeletons."[12][13] A primitive ceratopsian. 150px

See also

  • List of dinosaur-bearing rock formations

References

  1. ↑ Okada, H.; Mateer, N.J. (2000). Cretaceous Environments of Asia. Elsevier Science. p. 62. ISBN 978-0-08-053009-3. https://books.google.com/books?id=6Z1vBXKQSh4C. Retrieved 2015-05-17. 
  2. ↑ Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 563-570. ISBN 0-520-24209-2.
  3. ↑ Benton, M. J. (Michael J.) (2003). The age of dinosaurs in Russia and Mongolia. Cambridge University Press. p. 259. ISBN 0-521-54582-X. OCLC 53710242. 
  4. ↑ Khand, Y; Badamgarav, D; Ariumchimeg, Y; Barsbold, R (1 January 2000). "Cretaceous system in Mongolia and its depositional environments". Developments in Palaeontology and Stratigraphy 17: 49–79. doi:10.1016/S0920-5446(00)80024-2. 
  5. ↑ Hasegawa, Hitoshi; Ando, Hisao; Hasebe, Noriko; Ichinnorov, Niiden; Ohta, Tohru; Hasegawa, Takashi; Yamamoto, Masanobu; Li, Gang et al. (May 2018). "Depositional ages and characteristics of Middle– Upper Jurassic and Lower Cretaceous lacustrine deposits in southeastern Mongolia". Island Arc 27 (3). doi:10.1111/iar.12243. 
  6. ↑ Mainbayar, Buuvei; Fujita, Masato; Takasaki, Ryuji; Tsogtbaatar, Khishigjav; Badamkhatan, Zorigt; Odgerel, Nymsambuu; Ishigaki, Shinobu (19 March 2026). "A dinosaur ichnofauna from the Lower Cretaceous Shinekhudag Formation, Mongolia". Ichnos: 1–16. doi:10.1080/10420940.2026.2645024. 
  7. ↑ 7.0 7.1 Barsbold, R.; Perle, A. (1984). "On first new find of a primitive orithomimosaur from the Cretaceous of the MPR". Paleontological Journal 2: 121−123. 
  8. ↑ Kobayashi, Y.; Barsbold, R. (2005). "Anatomy of Harpymimus okladnikovi Barsbold and Perle 1984 (Dinosauria; Theropoda) of Mongolia". The carnivorous dinosaurs. Indianapolis: Indiana University Press. pp. 97–126. 
  9. ↑ 9.0 9.1 9.2 Rozhdestvensky, A. K. (1952). "Открытие игуанодона в Монголии" (in ru). Doklady Akademii Nauk SSSR 84 (6): 1243−1246. 
  10. ↑ Norman, D. B. (1996). "On Asian ornithopods (Dinosauria, Ornithischia). 1. Iguanodon orientalis Rozhdestvensky, 1952". Zoological Journal of the Linnean Society 116 (2): 303−315. doi:10.1006/zjls.1996.0021. 
  11. ↑ Paul, G. S. (2008). "A revised taxonomy of the iguanodont dinosaur genera and species". Cretaceous Research 29 (2): 192−216. doi:10.1016/j.cretres.2007.04.009. http://doc.rero.ch/record/16134/files/PAL_E2902.pdf. 
  12. ↑ Kalandadze, N. N.; Kurzanov, S. M. (1974). "Lower Cretaceous terrestrial vertebrate localities of Mongolia". Mesozoic and Cenozoic Faunas and Biostratigraphy of Mongolia. The Joint Soviet-Mongolian Paleontological Expedition, Transactions. pp. 288–295. 
  13. ↑ Watabe, M.; Suzuki, S. (2000). "Report on the Japan - Mongolia Joint Paleontological Expedition to the Gobi desert, 1993". Hayashibara Museum of Natural Sciences Research Bulletin 1: 17−29. 



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