Ejinhoro Formation

Ejinhoro Formation
Stratigraphic range: Aptian-Albian
Type	Geological formation
Lithology
Primary	Sandstone
Other	Mudstone, siltstone
Location
Coordinates	39.4°N 108.4°E / 39.4; 108.4
Approximate paleocoordinates	40.5°N 105.5°E / 40.5; 105.5
Region	Inner Mongolia
Country	China
Extent	Ordos Basin
Ejinhoro Formation (China) 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.

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

Fossil content

Mammals

Dinosaurs

Dinosaurs
Taxa	Presence	Notes	Images
Genus: Chiayusaurus C. sp.	Isolated teeth.	A sauropod.
Psittacosaurus P. neimongoliensis P. ordosensis		A ceratopsian. "[One] nearly complete skeleton and other fragmentary material." "Partial cranial material."
Saurischia indeterminate		A large saurischian.
Sinornithoides S. youngi	"Near-complete articulated skeleton."	A troodontid.
Stegosauridae indeterminate	Isolated teeth.	A stegosaurid.
Wuerhosaurus W. ordosensis		A large stegosaurid. "Partial skeleton, plate, vertebra, adult."

Pterosaurs

Indeterminate pterosaur remains have also been recovered from the formation.

See also

• List of dinosaur-bearing rock formations