Mononykus

Mononykus olecranus

Mononykus is a genus of alvarezsaurid dinosaur that lived during the Late Cretaceous in what is now Mongolia, specifically the Nemegt Formation, about 70 million years ago. Mononykus was a very small theropod, estimated around 1 to 1.2 metres (3.3 to 3.9 ft) in length with a weight of 3.5 kilograms (7.7 lb). As in Shuvuuia, Mononykus likely developed a shaggy feathering