Andaikhudag Formation
| Andaikhudag Formation | |
|---|---|
| Stratigraphic range: Hauterivian-Barremian ~ | |
| Type | Geological formation |
| Lithology | |
| Primary | Shale |
| Other | Sandstone |
| Location | |
| Coordinates | 46°00′N 99°36′E / 46.0°N 99.6°E |
| Approximate paleocoordinates | 47°12′N 100°18′E / 47.2°N 100.3°E |
| Region | Bayankhongor Province |
| Country |  Mongolia |
  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
References
- ^ a b Andaikhudag Formation in the Paleobiology Database
- ^ Weishampel et al., 2004, pp.517-607
- ^ Kurochkin, 2000
- ^ "Table 11.1," in Weishampel et al., 2004, p.214
- ^ Zelenkov & Averianov, 2015
- ^ Rasnitsyn, 1991
- ^ Rasnitsyn, 1993
- ^ Kopylov, 2009
- ^ Blagoderov, 2000
- ^ Kalugina, 1993
- ^ a b Ponomarenko, 1997
- ^ Sinitshenkova, 1987