Ulan Malgait Formation
Geologic formation in Mongolia / From Wikipedia, the free encyclopedia
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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]
Ulan Malgait Formation | |
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Stratigraphic range: Tithonian or Oxfordian ~160–145 Ma | |
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 | 44.1°N 95.8°E / 44.1; 95.8 |
Approximate paleocoordinates | 46.0°N 98.0°E / 46.0; 98.0 |
Region | Govi-Altay |
Country | Mongolia |
Type section | |
Named for | Ulan Malgait Mountain |
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.