Earth:Ejinhoro Formation

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Ejinhoro Formation
Stratigraphic range: Early Cretaceous
Barremian
↓
TypeGeological formation
Lithology
PrimarySandstone
OtherMudstone, siltstone
Location
Coordinates [ ⚑ ] : 39°24′N 108°24′E / 39.4°N 108.4°E / 39.4; 108.4
Paleocoordinates [ ⚑ ] 40°30′N 105°30′E / 40.5°N 105.5°E / 40.5; 105.5
RegionInner Mongolia
CountryChina
ExtentOrdos Basin
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The Ejinhoro Formation (simplified Chinese: 伊金霍洛组; traditional Chinese: 伊金霍洛組; pinyin: Yījīnhuòluò Zǔ) is a geological formation in Inner Mongolia, north China, whose strata date back to the Early Cretaceous period (Barremian).[1]

Dinosaur remains are among the fossils that have been recovered from the formation.[2]

Fossil content

Mammals

Mammals
Taxa Presence Notes Images

Genus:

  1. H. chowi

A single dentary[3]

A gobiconodontid

Dinosaurs

Dinosaurs
Taxa Presence Notes Images

Genus:

  1. C. sp.

Isolated teeth.

A sauropod.

Sinornithoides
Wuerhosaurus
  1. P. neimongoliensis
  2. P. ordosensis
A ceratopsian.
  1. "[One] nearly complete skeleton and other fragmentary material."[4]
  2. "Partial cranial material."[4]
  1. indeterminate
A large saurischian.
  1. S. youngi

"Near-complete articulated skeleton."[5]

A troodontid.
  1. indeterminate

Isolated teeth.

A stegosaurid.

  1. W. ordosensis
A large stegosaurid. "Partial skeleton, plate, vertebra, adult."[6]

Pterosaurs

Indeterminate pterosaur remains have also been recovered from the formation.[7]

See also

  • List of dinosaur-bearing rock formations

References

  1. ↑ Cuenca−Bescós, G.; Canudo, J.I. (2003). "A new gobiconodontid mammal from the Early Cretaceous of Spain and its palaeogeographic implications". Acta Palaeontologica Polonica 48 (4): 575–582. 
  2. ↑ Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 563-570. ISBN 0-520-24209-2.
  3. ↑ 3.0 3.1 Zofia Kielan-Jaworowska, Richard L. Cifelli, Zhe-Xi Luo (2004). "Chapter 12: Metatherians". Mammals from the Age of Dinosaurs: origins, evolution, and structure. New York: Columbia University Press. pp. 243. ISBN 978-0-231-11918-4. 
  4. ↑ 4.0 4.1 "Table 22.1," in Weishampel, et al. (2004). Page 479.
  5. ↑ "Table 9.1," in Weishampel, et al. (2004). Page 185.
  6. ↑ "Table 16.1," in Weishampel, et al. (2004). Page 345.
  7. ↑ 2008 - Zitteliana - Pterosaurs