Ulansuhai Formation

Coordinates: 40°18′N 105°54′E / 40.3°N 105.9°E / 40.3; 105.9
Source: Wikipedia, the free encyclopedia.
Ulansuhai Formation
Ma
↓
Type
Approximate paleocoordinates
41°30′N 97°12′E / 41.5°N 97.2°E / 41.5; 97.2
RegionInner Mongolia
Country China
Ulansuhai Formation is located in China
Ulansuhai Formation
Ulansuhai Formation (China)
Ulansuhai Formation is located in Inner Mongolia
Ulansuhai Formation

The Ulansuhai Formation (

formation in Inner Mongolia, north China. Dinosaur remains are among the fossils that have been recovered from the formation.[1]

The Ulansuhai Formation has traditionally been considered to date to the

Lower Cretaceous, due to similarities between the Ulansuhai fauna and known Aptian formations.[1] However, radiometric dating done on underlying formations has shown this to be incorrect. Due to the age of underlying rocks, the Ulansuhai Formation cannot be older than the Turonian stage of the Late Cretaceous, about 92 Ma.[2][3]

Fossil content

Dinosaurs

Dinosaurs
Taxa Presence Description Images
Chilantaisaurus tashuikouensis[1] A primitive
coelurosaurian[3]."Fragmentary postcranial skeleton."[4]
Chilantaisaurus
Gobisaurus
Shaochilong
Sinornithomimus
Gobisaurus domoculus[1] An ankylosaur. "Skull [and possible] postcranium."[5]
Shaochilong maortuensis[1] A carcharodontosaurid, formerly Chilantaisaurus maortuensis.
Sinocephale bexelli[6] A Pachycephalosaurid, known from now lost skull fragments. Formerly Troodon bexelli.
Sinornithomimus dongi[7][1] An ornithomimid. "[Fourteen] skeletons, juvenile to adult."[8]
Indeterminate
Iguanodontian[1]

Testudines

Turtles
Taxa Presence Description Images
Kuhnemys maortuensis[9] A Pantrionychid turtle

Ostracods

Caption text
Taxa Presence Description Image
cf. Cypridea[7] A Cyprideid

See also

  • List of dinosaur-bearing rock formations

References

  1. ^
    ISBN 0-520-24209-2
    .
  2. ^ Kobayashi, Y., and Lu, J.-C. (2003). "A new ornithomimid dinosaurian with gregarious habits from the Late Cretaceous of China." Acta Palaeontol. Pol., 48: 235–259.
  3. ^ a b Benson, R.B.J. and Xu, X. (2008). "The anatomy and systematic position of the theropod dinosaur Chilantaisaurus tashuikouensis Hu, 1964 from the Early Cretaceous of Alanshan, People’s Republic of China." Geol. Mag., 145: 778–789.
    doi:10.1017/S0016756808005475
  4. ^ "Table 4.1," in Weishampel, et al. (2004). Page 73.
  5. ^ "Table 17.1," in Weishampel, et al. (2004). Page 364.
  6. S2CID 244227050
    .
  7. ^ a b Kobayashi and Lu, Yoshitsugu and Jun-Chang (2003). "A new ornithomimid dinosaur with gregarious habits from the Late Cretaceous of China". Acta Palaeontologica Polonica. 48 (2): 235–259.
  8. ^ "Table 5.1," in Weishampel, et al. (2004). Page 138.
  9. ^ S.-Y. Hu. 1964. [Carnosaurian remains from Alashan, Inner Mongolia]. Vertebrata PalAsiatica. 8(1):42-63
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