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sharp-clawed runner
Aepyornithomimus
Say it like this: “ee-PEE-or-NITH-o-MIEM-us”
Aepyornithomimus tugrikinensis
Aepyornithomimus ate plants and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Mongolia.
- When
- Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
- Named in
- 2017 · Chinzorig, T.; Kobayashi, Y.; Tsogtbaatar, K.; Currie, P. J.; Watabe, M.; Barsbold, R.
- Hip height
- 0.8 m · 3 ft
- Length
- 3 m · 10 ft
- Weight
- 50 kg · 110 lb
- Found in
- Mongolia · Djadokhta
- Food and walking
- Herbivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Ornithomimidae
The story in short
Aepyornithomimus was formally named in 2017 by T. Chinzorig and colleagues. The name means “aepyornis mimic.”
It lived in the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from Mongolia, including the Djadokhta Formation. It was a herbivore and walked on two legs.
Published estimates put Aepyornithomimus at a length near 3 m, hips about 0.8 m high, and a body mass around 50 kg.
On the family tree it sits in Ornithomimidae, among the theropod dinosaurs.
Close relatives
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
Dromiceiomimus
Dromiceiomimus brevitertius
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago