Outline: a typical theropod

Ulansuhai Fm., ChinaNamed 2003

Sinornithomimus

"Chinese bird mimic"

Lived
94 to 90 million years ago, Late Cretaceous
Diet
Omnivore
Group
Theropods, Ornithomimidae
Found in
China
Named by
Kobayashi and Lü 2003

Where its fossils were found

The evidence

Today

1 find

90 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Sinornithomimus

What it was like

Sinornithomimus was an ostrich-like dinosaur with long legs, a long neck and a toothless beak. Many skeletons have been found, mostly of young animals, and some have small stones in the belly that probably helped grind plants.

Its world

It lived in the Late Cretaceous in what is now northern China. Its bones come from the Ulansuhai Formation, where it shared the land with the big hunter Chilantaisaurus.

How it was found

Kobayashi and Lü named Sinornithomimus in 2003. More than a dozen skeletons were found together, which suggests a group of young animals died at the same time, perhaps trapped in mud.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Ornithomimidae

Sources: WikidataNamed in: Y. Kobayashi and J. Lü. 2003. A new ornithomimid dinosaur with gregarious habits from the Late Cretaceous of China. Acta Palaeontologica Polonica 48(2):235-259