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sharp-clawed runner
Appalachiosaurus
Say it like this: “AP-uh-LAY-chee-oh-SOR-uhs”
Appalachiosaurus montgomeriensis
Appalachiosaurus ate meat and walked on two legs. It lived in the Late Cretaceous. Bones have been found in the United States.
- When
- Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
- Named in
- 2005 · Carr, T. D.; Williamson, T. E.; Schwimmer, D. R.
- Hip height
- 2 m · 7 ft
- Length
- 6.5 m · 21 ft
- Weight
- 623 kg · 1,373 lb
- Found in
- the United States · Demopolis
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Eutyrannosauria
The story in short
Appalachiosaurus was formally named in 2005 by T. D. Carr and colleagues. The name means “appalachian lizard.”
It lived in the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from the United States, including the Demopolis Formation. It was a carnivore and walked on two legs.
Published estimates put Appalachiosaurus at a length near 6.5 m, hips about 2 m high, and a body mass around 623 kg.
On the family tree it sits in Eutyrannosauria, among the theropod dinosaurs.
Close relatives
Bistahieversor
Bistahieversor sealeyi
Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Dryptosaurus
Dryptosaurus aquilunguis
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
Nanotyrannus
Nanotyrannus lancensis
Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago