Outline: a typical theropod

Nemegt Fm., MongoliaNamed 1977

Adasaurus

"evil spirit lizard"

Lived
72 to 66 million years ago, Late Cretaceous
Diet
Carnivore
Group
Theropods, Dromaeosauridae
Found in
Mongolia
Named by
Barsbold 1977

Where its fossils were found

The evidence

Today

1 find

70 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Adasaurus

What it was like

Adasaurus was a dromaeosaur, a feathered hunter related to Velociraptor. It was a bit larger than Velociraptor. Its sickle claw on each foot was smaller than in most of its relatives, which is unusual for the group.

Its world

It lived about 72 to 66 million years ago, in the Late Cretaceous, in what is now Mongolia. The Nemegt Formation was a land of rivers and forests, shared with the tyrannosaur Tarbosaurus, the giant clawed Therizinosaurus, the hump-backed Deinocheirus, the ostrich-like Gallimimus and the duckbill Saurolophus.

How it was found

Barsbold named Adasaurus in 1977. Its name comes from an evil spirit in Mongolian folklore. Only one find is known in detail.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Dromaeosauridae

Sources: WikidataNamed in: R. Barsbold. 1977. O evolutsiy chishcheich dinosavrov [On the evolution of carnivorous dinosaurs]. Trudy - Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya 4:48-56