Which came first?

[Brownshoe]

(03-31-2016, 02:19 AM)Nately120 Wrote: I realize this is a conversation piece rather than legitimate argument, but years ago they discovered that "the formation of egg shells relies on a protein found only in a chicken's ovaries."  So, eggs can't form without first being inside a chicken, ego the chicken came "first."

http://www.dailymail.co.uk/sciencetech/article-1294341/Chicken-really-DID-come-egg-say-scientists.html

"It's very interesting to find that different types of avian species seem to have a variation of the protein that does the same job"

Doesn't that mean that the egg could form inside of another avian animal (one which was the ancestors of the chicken obviously)