Earth:Andaikhudag Formation

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Short description: Early Cretaceous geologic formation in Mongolia
Andaikhudag Formation
Stratigraphic range: Hauterivian-Barremian
~132–125 Ma
TypeGeological formation
Lithology
PrimaryShale
OtherSandstone
Location
Coordinates [ ⚑ ] : 46°00′N 99°36′E / 46.0°N 99.6°E / 46.0; 99.6
Paleocoordinates [ ⚑ ] 47°12′N 100°18′E / 47.2°N 100.3°E / 47.2; 100.3
RegionBayankhongor Province
Country Mongolia
Andaikhudag Formation is located in Mongolia
Andaikhudag Formation
Andaikhudag Formation (Mongolia)

The Andaikhudag Formation, in older literature referred to as Unduruh Formation or Ondorukhaa Formation, is an Early Cretaceous (Hauterivian to Barremian) geologic formation in Mongolia.[1] Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.[2]

Fossil content

The following fossils have been reported from the lacustrine shales and secondary sandstones of the formation:[1]

Birds
  • Ambiortus dementjevi[3] - "Vertebrae and forelimb"[4]
  • Holbotia ponomarenkoi[5]
Insects

See also

  • List of dinosaur-bearing rock formations
    • List of stratigraphic units with few dinosaur genera
  • Tsagaantsav Formation

References

  1. 1.0 1.1 Andaikhudag Formation in the Paleobiology Database
  2. Weishampel et al., 2004, pp.517-607
  3. Kurochkin, 2000
  4. "Table 11.1," in Weishampel et al., 2004, p.214
  5. Zelenkov & Averianov, 2015
  6. Rasnitsyn, 1991
  7. Rasnitsyn, 1993
  8. Kopylov, 2009
  9. Blagoderov, 2000
  10. Kalugina, 1993
  11. 11.0 11.1 Ponomarenko, 1997
  12. Sinitshenkova, 1987

Bibliography

  • Zelenkov, Nikita V., and Alexander O. Averianov. 2015. A historical specimen of enantiornithine bird from the Early Cretaceous of Mongolia representing a new taxon with a specialized neck morphology. Journal of Systematic Palaeontology 14. 319–338. doi:10.1080/14772019.2015.1051146
  • Kopylov, D.S. 2009. A new subfamily of Ichneumonids from the Lower Cretaceous of Transbaikalia and Mongolia (Insecta: Hymenoptera: Ichneumonidae). Paleontological Journal 43. 83–93.
  • 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
  • Blagoderov, V.A. 2000. New fungus gnats (Diptera: Mycetophilidae) from the Cretaceous and Paleogene of Asia. Paleontological Journal 34. S355–S359.
  • Kurochkin, E.N. 2000. Mesozoic birds of Mongolia and the former USSR in M. J. Benton, M. A. Shishkin, D. M. Unwin, & E N. Kurichkin (eds.), 533–559. The Age of Dinosaurs in Russia and Mongolia.
  • Ponomarenko, A.G. 1997. New beetles of the family Cupedidae from the Mesozoic of Mongolia - Ommatini, Mesocupedini, Priacmini. Paleontological Journal 31. 389–399.
  • Kalugina, N.S. 1993. Khaoboridy i Komary-zvontsy iz Mezozoya vostochnogo Zabaykal'ya (Diptera: Chaoboridae, Chironomidae). in, 117–139. A. G. Ponomarenko (ed.), Mezozoyskie Nasekomye i Ostrakody Azii.
  • Rasnitsyn, A.P. 1993. Novye taksony sepulek (Vespida: Sepulcidae) in, 80–99. A. G. Ponomarenko (ed.) Mezozoyskie Nasekomye i Ostrakody Azii.
  • Rasnitsyn, A.P. 1991. Early Cretaceous evanimorphous hymenopteran families Stigmaphronidae and Cretevaniidae and the subfamily Kotujellitinae (Gasteruptiidae). Paleontological Journal 25. 172–179.
  • Sinitshenkova, N.D. 1987. Istopicheskoe razvitie vesiyanok. Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 221. 1–142.