Raptorex

Say it like this: “RAP-tor-eks”

Raptorex kriegsteini

Raptorex ate meat and walked on two legs. It lived in the Late Cretaceous.

When: Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
Named in: 2009 · Sereno, P. C.; Tan, L.; Brusatte, S. L.; Kriegstein, H. J.; Zhao, X.; Cloward, K.
Hip height: Not established
Length: 2.5–3 m · 8–10 ft
Weight: 65 kg · 143 lb
Found in: Not recorded
Food and walking: Carnivore · Two legs
Kind: sharp-clawed runner · Theropod
Family branch: Tyrannosauroidea

The story in short

Raptorex was formally named in 2009 by P. C. Sereno and colleagues.

It lived in the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. It was a carnivore and walked on two legs.

Published estimates put Raptorex at a length near 2.5–3 m and a body mass around 65 kg.

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

Alectrosaurus

Alectrosaurus olseni

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

Aviatyrannis

Aviatyrannis jurassica

Late Jurassic (Oxfordian · Kimmeridgian · Tithonian) · roughly 161.5 to 143.1 million years ago

Calamosaurus

Calamosaurus foxi

Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago