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]

Tsagaantsav Formation
Stratigraphic range: Hauterivian-Barremian
131–126 Ma
TypeGeological formation
UnderliesZuunbayan Formation, Shinekhudag Formation
OverliesBasement
Lithology
PrimarySandstone, siltstone
Location
Coordinates44°54′N 110°24′E / 44.9°N 110.4°E / 44.9; 110.4
Approximate paleocoordinates46°42′N 112°18′E / 46.7°N 112.3°E / 46.7; 112.3
RegionKhovd, Uvs, Dornogovi & Övörkhangai Provinces
Country Mongolia
Type section
Named forTsagan-Tsab well
Tsagaantsav Formation is located in Mongolia
Tsagaantsav Formation
Tsagaantsav Formation
Tsagaantsav Formation
Tsagaantsav Formation
Tsagaantsav Formation (Mongolia)

Graham et al. 2001 reported radiometric dates of 131 and 126 Ma from the formation.[5]

Fossil content

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The following fossils were reported from the fluvial to lacustrine sandstones and siltstones of the formation:[1]

Insects

See also

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References

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  1. ^ a b Tsagaantsav Formation in the Paleobiology Database
  2. ^ Weishampel et al., 2004, pp.517-607
  3. ^ Barrett et al., 2008
  4. ^ Lü et al., 2009
  5. ^ Tsagan-Tsab well in the Paleobiology Database
  6. ^ Ponomarenko, 1992

Bibliography

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  • Lü, J.; Azuma, Y.; Dong, Z.; Barsbold, R.; Kobayashi, Y.; Lee, Y.-N. (2009). "New material of dsungaripterid pterosaurs (Pterosauria: Pterodactyloidea) from western Mongolia and its palaeoecological implications". Geological Magazine. 146 (5): 690–700. Bibcode:2009GeoM..146..690L. doi:10.1017/S0016756809006414.
  • Barrett, P.M.; Butler, R.J.; Edwards, N.P.; Milner, A.R. (2008). Hone, D.W.E.; Buffetaut, É. (eds.). "Pterosaur distribution in time and space: an atlas in Flugsaurier: Pterosaur papers in honour of Peter Wellnhofer" (PDF). Zitteliana B. 28: 61–107.
  • Weishampel, David B.; Dodson, Peter; Osmólska, Halszka, eds. (2004). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 1–880. ISBN 0-520-24209-2. Retrieved 2019-02-21.
  • Ponomarenko, A.G. (1992). "Novye setchatokrylye (Insecta: Neuroptera) iz mezozoya Mongolii. Novye Taksony Iskopaemykh Bespozvonochnykh Mongolii". Sovmestnaya Rossiisko-Mongol'skaya Paleontologicheskaya Ekspeditsiya. 41: 101–111.