This discovery also indicates that the furcula of birds is derived from clavicles.
From the en.wikipedia.org
Tinamous have a proper semicircular furcula, with no trace of a hypocleidium.
From the en.wikipedia.org
It does this by whipping its tail-like furcula against the snow.
From the buffalonews.com
Feathers made the evolutionary trend clear even to those who couldn't tell a femur from a furcula.
From the newscientist.com
The clavicles do not fuse into a furcula.
From the en.wikipedia.org
Even these two skeletal mounts are lacking elements including the sterna, sternal ribs, furcula, and gastralia.
From the en.wikipedia.org
Most species have an abdominal, tail-like appendage, the furcula, that is folded beneath the body to be used for jumping when the animal is threatened.
From the en.wikipedia.org
As in other flightless birds and some other flighted parrots, the furcula is not fused, but consists of a pair of clavicles lying in contact with each coracoid.
From the en.wikipedia.org
More examples
A forked bone formed by the fusion of the clavicles of most birds
The furcula is a tail-like appendage shaped like a fork, found on the fourth abdominal segment of springtails. Present in most species, it is used for jumping when the animal is threatened. ...
Furcula is a genus of moths of the Notodontidae family.
(furculum) (plural: furcula) - the elongate fork-like appendage on the end of the abdomen (folds under the body) of Collembola which is used as a spring action for leaping
A pair of posterior facing projections found on top of (if present) the supra-anal plate.
Forked projection from posterior edge of tenth abdominal tergum and overlying supraanal plate (Fig. 8).
Commonly referred to as the 'wishbone'.
Forked structure on supra-anal plate of male grasshopper. (Fig. 58);newmexicofigure58.focus();return false;)