| Ulan Malgait Formation | |
|---|---|
| Stratigraphic range: Tithonian or Oxfordian ~ | |
| Type | Geological formation |
| Sub-units | Shar Teg & Ulan Malgait Beds |
| Thickness | up to ~300 m (980 ft) |
| Lithology | |
| Primary | Mudstone |
| Other | Sandstone, conglomerate, caliche |
| Location | |
| Coordinates | 44°06′N 95°48′E / 44.1°N 95.8°E |
| Approximate paleocoordinates | 46°00′N 98°00′E / 46.0°N 98.0°E |
| Region | Govi-Altay |
| Country |  Mongolia |
| Type section | |
| Named for | Ulan Malgait Mountain |
  Ulan Malgait Formation (Mongolia) | |
The Ulan Malgait Formation is a Late Jurassic geologic formation in Mongolia. Dinosaur remains are among the fossils that have been recovered from the formation, although as of 2004[update] none have yet been referred to a specific genus.[1]
It is best known for the Shar Teeg locality which has lent its name to Shartegosuchidae, a family of mesoeucrocodylians (relatives of crocodilians), many of which have been found there; Shartegosuchus (the family's type genus) means "Shar Teeg crocodile".[2] It is divided up into 2 subunits, the lower Shar Teg Beds and the upper Ulan Malgait Beds.[3]
The tritylodontids Shartegodon, Nuurtherium and Bienotheroides are known from the formation.,[4] As is docodontan Tegotherium. The turtles Annemys levensis and Annemys latiens and crocodylians Sunosuchus shartegensis and Adzhosuchus fuscus were also recovered from the formation.[5] Numerous species of insects are also known from the formation.[6][7][8][9] which was deposited in a lacustrine environment.
- ^ Weishampel et al., 2004, pp.517-607
- ^ Dollman et al., 2018
- ^ Watabe, 2010
- ^ Velazco et al., 2017
- ^ Efimov et al., 2000
- ^ I. D. Sukacheva. 2000. New fossil caddis flies (Trichoptera) from the Shar-Teg locality in Mongolia. Paleontological Journal 34(Suppl 3):S347-S351
- ^ "Shar-Teg, outcrop 443/1 (PIN collection 4270)". Paleobiology Database – via fossilworks.
- ^ "Shar-Teg, outcrop 423/6 (PIN collection 4270)". Paleobiology Database – via fossilworks.
- ^ "Shar-Teg, outcrop 441/4 (PIN collection 4270)". Paleobiology Database – via fossilworks.