Comment Darwin was right (Score 1) 341
If one accepts the premise of natural selection based evolution, then the only possibility is that the egg came first.
The first chicken would have been laid in an egg, whose parent was something other than a chicken (perhaps a bit more dinosaur like, reflecting its earlier origins).
The paper as I understand it isn't showing whether the "chicken" or the egg came first, but rather, the original chicken-like organism (either a dinosaur or something earlier) or the egg it came in. These are actually two very different things.