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sharp-clawed runner
Imperobator
Say it like this: “im-PERR-oh-BAY-tor”
Imperobator antarcticus
Imperobator ate meat and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Antarctica.
- When
- Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
- Named in
- 2019 · Ely, R. C.; Case, J. A.
- Hip height
- Not established
- Length
- 2–3 m · 7–10 ft
- Weight
- Not established
- Found in
- Antarctica · Snow Hill Island
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Paraves
The story in short
The genus Imperobator dates to 2019, the year R. C. Ely and J. A. Case described it. The name means “powerful warrior.”
Fossils referred to Imperobator date to the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. Finds come from Antarctica, including the Snow Hill Island Formation. It was a carnivore and walked on two legs.
Published estimates put Imperobator at a length near 2–3 m.
On the family tree it sits in Paraves, among the theropod dinosaurs.
Close relatives
Euronychodon
Euronychodon portucalensis
Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago
Overoraptor
Overoraptor chimentoi
Late Cretaceous (Cenomanian · Turonian) · roughly 100.5 to 89.8 million years ago
Paronychodon
Paronychodon lacustris
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago