Tsagaantsav Formation

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
TypeGeological formation
UnderliesZuunbayan Formation, Shinekhudag Formation
OverliesBasement
Lithology
PrimarySandstone, siltstone
Location
Coordinates44.9°N 110.4°E / 44.9; 110.4
Approximate paleocoordinates46.7°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

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

Insects
  • Khutelchalcis gobiensis
  • Eopelecinus fragilis
  • E. minutus
  • Praeichneumon townesi
  • Eobraconus inopinatus
  • Westratia femorata
  • W. pachygaster
  • W. pentadecamera
  • Langtonius cynaricaudatus
  • Eugenodiamesa makarchenkoi
  • Jurochlus adustus
  • Ellia khara
  • Protanyderus mesozoicus
  • Metatrichopteridium cladistorum
  • Plectrocentropus sulis
  • Eoclipsis mongolica
  • Coptoclavisca nigricollinus
  • Cretorabus orientalis
  • Mesaclopus mongolicus
  • Chinocimberis dispersus
  • Megametrioxenoides longus
  • Uroperla lacerata
  • Trianguliperla quassa
  • Aphaorus curtipes
  • Juleyrodes ?gilli
  • Izinabis kerzhneri
  • Siberiogenites medius
  • Torephemera longipes
  • Leptoneta calyptrata
  • Albisca tracheata
  • Epeoromimus infractus
  • Osmylogramma martinsoni[6]
  • Juraphididae indet.

See also

References
  1. 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
  • Lü, J.; Y. Azuma; Z. Dong; R. Barsbold; Y. Kobayashi, and Y.-N. Lee. 2009. New material of dsungaripterid pterosaurs (Pterosauria: Pterodactyloidea) from western Mongolia and its palaeoecological implications. Geological Magazine 146. 690–700. .
  • Barrett, P.M.; R.J. Butler; N.P. Edwards, and A.R. Milner. 2008. Pterosaur distribution in time and space: an atlas in Flugsaurier: Pterosaur papers in honour of Peter Wellnhofer. Zitteliana B 28. 61–107. .
  • Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
  • 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. .
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.