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sharp-clawed runner
Richardoestesia
Say it like this: “ri-KARD-o-es-TEE-zee-a”
Richardoestesia gilmorei
Richardoestesia ate meat and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Canada and the United States.
- When
- Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
- Named in
- 1990 · Currie, P. J.; Rigby, J. K.; Sloan, R. E.
- Hip height
- Not established
- Length
- Not established
- Weight
- Not established
- Found in
- Canada and the United States · Dinosaur Park
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Dromaeosauridae
The story in short
Richardoestesia was formally named in 1990 by P. J. Currie and colleagues. The name honors a person tied to the fossil or its study.
Fossils referred to Richardoestesia date to the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from Canada and the United States, including the Dinosaur Park Formation. It was a carnivore and walked on two legs.
The fossils of Richardoestesia are too incomplete for a responsible length, hip height, or weight, so those fields are left blank on purpose.
On the family tree it sits in Dromaeosauridae, among the theropod dinosaurs.
This entry is the whole genus. The type species is Richardoestesia gilmorei. Other named species include Richardoestesia isosceles.
Other species with this name
- Richardoestesia gilmorei
- Richardoestesia isosceles
Close relatives
Asiamericana
Asiamericana asiatica
Late Cretaceous (Turonian · Coniacian) · roughly 93.9 to 85.7 million years ago
Balaur
Balaur bondoc
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
Dakotaraptor
Dakotaraptor steini
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago