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Furcula evolution3

Evolution of the furcula

The furcula ("little fork" in Latin) is a forked bone found in birds and theropod dinosaurs, formed by the fusion of the two clavicles. In birds, its function is the strengthening of the thoracic skeleton to withstand the rigors of flight.

The following theropods have been found to have furculae: aves, dromaeosaurids (including a new North American species of Velociraptor), Oviraptorids, Tyrannosaurids, Troodontids, Coelophysids and Allosauroids.[citation needed]
Mantell's Iguanodon restoration

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