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Ulan Malgait Formation

January 01, 1970

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 none have yet been referred to a specific genus.[1]

Ulan Malgait Formation
Stratigraphic range: Tithonian or Oxfordian
~160–145 Ma
TypeGeological formation
Sub-unitsShar Teg & Ulan Malgait Beds
Thicknessup to ~300 m (980 ft)
Lithology
PrimaryMudstone
OtherSandstone, conglomerate, caliche
Location
Coordinates44°06′N 95°48′E / 44.1°N 95.8°E / 44.1; 95.8
Approximate paleocoordinates46°00′N 98°00′E / 46.0°N 98.0°E / 46.0; 98.0
RegionGovi-Altay
Country Mongolia
Type section
Named forUlan Malgait Mountain
Ulan Malgait Formation (Mongolia)

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.

Age edit

Dollman et al. (2018) argue that the age of the Ulan Malgait Formation is likely to be Oxfordian based on the shared presence of Shartegosuchus and Nominosuchus with the radiometrically-dated Shishigou Formation of China.[10]

See also edit

References edit

  1. ^ Weishampel et al., 2004, pp.517-607
  2. ^ Dollman et al., 2018
  3. ^ Watabe, 2010
  4. ^ Velazco et al., 2017
  5. ^ Efimov et al., 2000
  6. ^ I. D. Sukacheva. 2000. New fossil caddis flies (Trichoptera) from the Shar-Teg locality in Mongolia. Paleontological Journal 34(Suppl 3):S347-S351
  7. ^ "Shar-Teg, outcrop 443/1 (PIN collection 4270)". Paleobiology Database – via fossilworks.
  8. ^ "Shar-Teg, outcrop 423/6 (PIN collection 4270)". Paleobiology Database – via fossilworks.
  9. ^ "Shar-Teg, outcrop 441/4 (PIN collection 4270)". Paleobiology Database – via fossilworks.
  10. ^ Bor Ukhaa hills at Fossilworks.org

Bibliography edit

  • Dollman, K. N.; J. M. Clark; M. A. Norell; X. Xu, and J. M. Choiniere. 2018. Convergent Evolution of a Eusuchian-Type Secondary Palate within Shartegosuchidae. American Museum Novitates 3901. 1–23. .
  • Velazco, Paúl M.; Alexandra J. Buczek, and Michael J. Novacek. 2017. Two new tritylodontids (Synapsida, Cynodontia, Mammaliamorpha) from the Upper Jurassic, southwestern Mongolia. American Museum Novitates 3874(3874). 1–35. . doi:10.1206/3874.1 hdl:2246/6698
  • Watabe, Mahito. 2010. Geology of dinosaur-fossil-bearing localities(Jurassic and Cretaceous: Mesozoic) in the Gobi Desert: Results of the HMNS-MPC Joint Paleontological Expedition. Hayashibara Museum of Natural Sciences Research Bulletin 3. 41–118. .
  • Weishampel, David B.; Peter Dodson, and Halszka (eds.) Osmólska. 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
  • Efimov, M. B.; Y. M. Gubin, and S. M. Kurzanov. 2000. New primitive crocodile (Crocodylomorpha: Shartegosuchidae) from the Jurassic of Mongolia. Paleontological Journal 34. S238-S241. .

Further reading edit

  • M. Rabi, V. B. Sukhanov, V. N. Egorova, I. Danilov, and W. G. Joyce. 2014. Osteology, relationships, and ecology of Annemys (Testudines, Eucryptodira) from the Late Jurassic of Shar Teg, Mongolia, and phylogenetic definitions for Xinjiangchelyidae, Sinemydidae, and Macrobaenidae. Journal of Vertebrate Paleontology 34(2):327-352
  • M. Watabe, K. Tsogtbaatar, T. Tsuihiji and R. Barsbold. 2003. The first discovery of diverse Jurassic dinosaur faunas in Mongolia. Journal of Vertebrate Paleontology 23(3, suppl.):108A
  • V. B. Sukhanov. 2000. Mesozoic turtles of Middle and Central Asia. In M. J. Benton, M. A. Shishkin, D. M. Unwin, & E N. Kurichkin (eds.), The Age of Dinosaurs in Russia and Mongolia 309-367
  • Y. M. Gubin and S. M. Sinitza. 1996. Shar Teg: a unique Mesozoic locality of Asia. In M. Morales (ed.), The Continental Jurassic. Museum of Northern Arizona Bulletin 60:311-318

January 01, 1970
ulan, malgait, formation, late, jurassic, geologic, formation, mongolia, dinosaur, remains, among, fossils, that, have, been, recovered, from, formation, although, 2004, update, none, have, been, referred, specific, genus, stratigraphic, range, tithonian, oxfo. 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 FormationStratigraphic range Tithonian or Oxfordian 160 145 Ma PreꞒ Ꞓ O S D C P T J K Pg NTypeGeological formationSub unitsShar Teg amp Ulan Malgait BedsThicknessup to 300 m 980 ft LithologyPrimaryMudstoneOtherSandstone conglomerate calicheLocationCoordinates44 06 N 95 48 E 44 1 N 95 8 E 44 1 95 8Approximate paleocoordinates46 00 N 98 00 E 46 0 N 98 0 E 46 0 98 0RegionGovi AltayCountry MongoliaType sectionNamed forUlan Malgait MountainUlan Malgait Formation Mongolia 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 Contents 1 Age 2 See also 3 References 3 1 Bibliography 4 Further readingAge editDollman et al 2018 argue that the age of the Ulan Malgait Formation is likely to be Oxfordian based on the shared presence of Shartegosuchus and Nominosuchus with the radiometrically dated Shishigou Formation of China 10 See also editList of dinosaur bearing rock formations List of stratigraphic units with indeterminate dinosaur fossilsReferences edit Weishampel et al 2004 pp 517 607 Dollman et al 2018 Watabe 2010 Velazco et al 2017 Efimov et al 2000 I D Sukacheva 2000 New fossil caddis flies Trichoptera from the Shar Teg locality in Mongolia Paleontological Journal 34 Suppl 3 S347 S351 Shar Teg outcrop 443 1 PIN collection 4270 Paleobiology Database via fossilworks Shar Teg outcrop 423 6 PIN collection 4270 Paleobiology Database via fossilworks Shar Teg outcrop 441 4 PIN collection 4270 Paleobiology Database via fossilworks Bor Ukhaa hills at Fossilworks org Bibliography edit Dollman K N J M Clark M A Norell X Xu and J M Choiniere 2018 Convergent Evolution of a Eusuchian Type Secondary Palate within Shartegosuchidae American Museum Novitates 3901 1 23 Velazco Paul M Alexandra J Buczek and Michael J Novacek 2017 Two new tritylodontids Synapsida Cynodontia Mammaliamorpha from the Upper Jurassic southwestern Mongolia American Museum Novitates 3874 3874 1 35 doi 10 1206 3874 1 hdl 2246 6698 Watabe Mahito 2010 Geology of dinosaur fossil bearing localities Jurassic and Cretaceous Mesozoic in the Gobi Desert Results of the HMNS MPC Joint Paleontological Expedition Hayashibara Museum of Natural Sciences Research Bulletin 3 41 118 Weishampel David B Peter Dodson and Halszka eds Osmolska 2004 The Dinosauria 2nd edition 1 880 Berkeley University of California Press Accessed 2019 02 21 ISBN 0 520 24209 2 Efimov M B Y M Gubin and S M Kurzanov 2000 New primitive crocodile Crocodylomorpha Shartegosuchidae from the Jurassic of Mongolia Paleontological Journal 34 S238 S241 Further reading editM Rabi V B Sukhanov V N Egorova I Danilov and W G Joyce 2014 Osteology relationships and ecology of Annemys Testudines Eucryptodira from the Late Jurassic of Shar Teg Mongolia and phylogenetic definitions for Xinjiangchelyidae Sinemydidae and Macrobaenidae Journal of Vertebrate Paleontology 34 2 327 352 M Watabe K Tsogtbaatar T Tsuihiji and R Barsbold 2003 The first discovery of diverse Jurassic dinosaur faunas in Mongolia Journal of Vertebrate Paleontology 23 3 suppl 108A V B Sukhanov 2000 Mesozoic turtles of Middle and Central Asia In M J Benton M A Shishkin D M Unwin amp E N Kurichkin eds The Age of Dinosaurs in Russia and Mongolia 309 367 Y M Gubin and S M Sinitza 1996 Shar Teg a unique Mesozoic locality of Asia In M Morales ed The Continental Jurassic Museum of Northern Arizona Bulletin 60 311 318 Retrieved from https en wikipedia org w index php title Ulan Malgait Formation amp oldid 1060840423, wikipedia, wiki, book, books, library,

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