Chirostenotes (KIE-ro-STEN-o-teez, named from Greek 'narrow-handed') was an oviraptorosaur from the late Cretaceous (80 million years ago) of Alberta, Canada. It was characterized by a beak, long arms ending in powerful claws, long, slender toes and a tall, rounded cassowary-like crest or casque. Chirostenotes was probably an omnivore or herbivore, although the beak is not as heavily constructed as in the Asian Oviraptoridae. The type species is Chirostenotes pergracilis. A smaller species, C. elegans, has also been named from Alberta, although it probably belongs to the closely-related Elmisaurus. A large skeleton from the Horseshoe Canyon Formation has been referred to Chirostenotes pergracilis, although it may represent a new species. The first Chirostenotes was found in the Dinosaur Park Formation of Canada, which has yielded the most dinosaurs of any Canadian formation.
In life, the animal was about long and tall at the hips. It had an estimated weight of about 110 pounds. It probably ate small reptiles and mammals, as well as plants, eggs and insects.
Also, a set of jaws with strange teeth were originally thought to be part of Chirostenotes but, now that it is known that Chirostenotes was a toothless oviraptorosaur, the jaws have been renamed Ricardoestesia and are from an otherwise unknown dinosaur.