Furcula

: furculae)[a] or wishbone is a forked bone found in most birds and some species of non-avian dinosaurs, and is formed by the fusion of the two clavicles.

In conjunction with the coracoid and the scapula, it forms a unique structure called the triosseal canal, which houses a strong tendon that connects the supracoracoideus muscles to the humerus.

[1] As the thorax is compressed by the flight muscles during downstroke, the upper ends of the furcula spread apart, expanding by as much as 50% of its resting width, and then contracts.

[1] Several groups of theropod dinosaurs have also been found with furculae, including dromaeosaurids, oviraptorids,[4] tyrannosaurids,[5] troodontids, spinosaurids,[6] coelophysids[7] and allosauroids.

", and of a military officer: "This valiant man, this Christian Captain drew forth out of his doublet that heretical object of superstition, the goose-bone, and showed me that after Candlemas an exceeding severe frost should occur, and could not fail."