I quick-scattered a rosary's worth of crumbs in a wide arc, then brushed my hands clean on my thighs. "I double-checked all that stuff I mentioned last time. Deinonychus is the name of the dinosaur that had a wrist joint that looks the same as the wing joint in the Archeopteryx, and the Archeopteryx has feathers and wings, hence is seen as the first bird. See, dinosaurs and proto-birds had this common ancestor in the Jurassic period. .."