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]

Fossil content

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

Insects

See also

References

  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