Sinornithomimus

Say it like this: “sy-nor-NITH-oh-MY-mus”

Sinornithomimus dongi

Sinornithomimus ate plants and walked on two legs. It lived in the Late Cretaceous. Bones have been found in China.

Quiz me on Sinornithomimus

When: Late Cretaceous (Turonian) · roughly 93.9 to 89.8 million years ago
Named in: 2003 · Kobayashi, Y.; Lü, J.
Hip height: 0.8 m · 3 ft
Length: 2.5 m · 8 ft
Weight: 91 kg · 201 lb
Found in: China · Ulansuhai
Food and walking: Herbivore · Two legs
Kind: sharp-clawed runner · Theropod
Family branch: Ornithomimidae

The story in short

In 2003, Y. Kobayashi and J. Lü published the name Sinornithomimus. The name means “chinese bird mimic.”

Fossils referred to Sinornithomimus date to the Late Cretaceous (Turonian), roughly 93.9 to 89.8 million years ago. Finds come from China, including the Ulansuhai Formation. It was a herbivore and walked on two legs.

Published estimates put Sinornithomimus at a length near 2.5 m, hips about 0.8 m high, and a body mass around 91 kg.

On the family tree it sits in Ornithomimidae, among the theropod dinosaurs.

Close relatives

Aepyornithomimus

Aepyornithomimus tugrikinensis

Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago

Anserimimus

Anserimimus planinychus

Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago

Archaeornithomimus

Archaeornithomimus asiaticus

Late Cretaceous (Coniacian · Santonian · Campanian) · roughly 89.8 to 72.2 million years ago