Andaikhudag Formation

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]

TypeGeological formation

PrimaryShale

OtherSandstone

Coordinates46.0°N 99.6°E

Quick facts Type, Lithology ...

Andaikhudag Formation
Stratigraphic range: Hauterivian-Barremian ~132–125 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Lithology
Primary	Shale
Other	Sandstone
Location
Coordinates	46.0°N 99.6°E / 46.0; 99.6
Approximate paleocoordinates	47.2°N 100.3°E / 47.2; 100.3
Region	Bayankhongor Province
Country	Mongolia
Andaikhudag Formation (Mongolia)

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

Hymenoptera
- Kotujisca kholbotensis^[6]
- Neoxyelula reducta^[7]
- Palaeoichneumon townesi^[8]
Diptera
- Syntemna tele^[9]
- Ulaia communis^[10]
Coleoptera
- Allophalerus bontsaganensis^[11]
- Tetraphalerus notatus^[11]
Plecoptera
- Accretonemoura radiata^[12]

References

[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]
Ponomarenko, 1997
[12]
Sinitshenkova, 1987

Bibliography

Zelenkov, Nikita V.; Averianov, Alexander O. (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 (4): 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 (1): 83–93, Bibcode:2009PalJ...43...83K, doi:10.1134/S0031030109010092
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{{citation}}: CS1 maint: publisher location (link)
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.), The Age of Dinosaurs in Russia and Mongolia, pp. 533–559
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, A. G. Ponomarenko (ed.), Mezozoyskie Nasekomye i Ostrakody Azii, pp. 117–139
Rasnitsyn, A.P (1993), Novye taksony sepulek (Vespida: Sepulcidae) in, A. G. Ponomarenko (ed.) Mezozoyskie Nasekomye i Ostrakody Azii, pp. 80–99
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

Andaikhudag Formation

Fossil content

See also

References

Bibliography

Related Articles