Ejinhoro Formation

Ejinhoro Formation
Stratigraphic range: Aptian-Albian
113 Ma
↓
TypeGeological formation
Lithology
PrimarySandstone
OtherMudstone, siltstone
Location
Coordinates39°24′N 108°24′E / 39.4°N 108.4°E / 39.4; 108.4
Approximate paleocoordinates40°30′N 105°30′E / 40.5°N 105.5°E / 40.5; 105.5
RegionInner Mongolia
Country China
ExtentOrdos Basin
Ejinhoro Formation is located in China
Ejinhoro Formation
Ejinhoro Formation (China)
Ejinhoro Formation is located in Inner Mongolia
Ejinhoro Formation
Ejinhoro Formation (Inner Mongolia)

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 (Aptian/Albian age.[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

References

  1. ^ Sereno, P.C. (2010). "Taxonomy, cranial morphology, and relationships of parrot-beaked dinosaurs (Ceratopsia: Psittacosaurus)." New Perspectives on Horned Dinosaurs. Bloomington: Indiana, 21-58.
  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. ^ a b 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. p. 243. ISBN 978-0-231-11918-4.{{cite book}}: CS1 maint: multiple names: authors list (link)
  4. ^ a b "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