Genus of clawed theropod dinosaur (family Dromaeosauridae) that flourished in central and eastern Asia during the Late Cretaceous Epoch (99–65 million years ago). It was related to an Early Cretaceous (144–99 million years ago) North American genus, Deinonychus. Both genera had a sickle-shaped claw on each foot and ossified tendon reinforcements in the tail that enabled them to keep their balance while striking and slashing at prey. Swift, agile predators of small herbivores, they grew up to 6 ft (1.8 m) long and weighed up to 100 lb (45 kg).

This entry comes from Encyclopædia Britannica Concise.
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