| Tsagaantsav Formation | |
|---|---|
| Stratigraphic range: Hauterivian-Barremian | |
| Type | Geological formation |
| Underlies | Zuunbayan Formation, Shinekhudag Formation |
| Overlies | Basement |
| Lithology | |
| Primary | Sandstone, siltstone |
| Location | |
| Coordinates | 44°54′N 110°24′E / 44.9°N 110.4°E |
| Approximate paleocoordinates | 46°42′N 112°18′E / 46.7°N 112.3°E |
| Region | Khovd, Uvs, Dornogovi & Övörkhangai Provinces |
| Country |  Mongolia |
| Type section | |
| Named for | Tsagan-Tsab well |
   Tsagaantsav Formation (Mongolia) | |
The Tsagaantsav Formation, Tsagantsab Formation or Tsagan-Tsab Formation (Russian: Tsagaantsav Svita) is an Early Cretaceous (Hauterivian to Barremian) geologic formation in Mongolia.[1] Indeterminate sauropod and psittacosaurid remains have been recovered from the formation.[2] Remains of the pterosaur Noripterus, which were originally given their own genus, "Phobetor" have also been recovered from the formation.[3][4]
Graham et al. 2001 reported radiometric dates of 131 and 126 Ma from the formation.[5]
- ^ Tsagaantsav Formation in the Paleobiology Database
- ^ Weishampel et al., 2004, pp.517-607
- ^ Barrett et al., 2008
- ^ Lü et al., 2009
- ^ Tsagan-Tsab well in the Paleobiology Database