Caenagnathus

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Caenagnathus ('recent jaw') is a genus of oviraptorosaurian dinosaur from the late Cretaceous (75 million years ago).

It is known from a single lower jaw, found in the Dinosaur Park Formation of Alberta, Canada.This dinosaur has a confusing history.

In 1936, a set of jaws were found, and later given the name Caenagnathus, meaning 'recent jaw'; they were first thought to be those of a bird.

In 1988, a specimen from storage since 1923 was discovered and studied.

This fossil were used to link the discoveries of several fragmentary oviraptorosaur species into a single dinosaur, which was assigned to the genus Chirostenotes, originally named for a pair of hands that were long considered to come from the same animal as Caenagnathus.