read this thread from the Ameraucana Breeders Club. This is the history of all three Easter Eggers, Ameraucana, and Araucana. Although the Araucana and the Ameraucana have been bred away from the orginial Quechua type chicken more than the Easter Egger in my opinion. As stated IMO. Not going for an argument myself. I think this explains it the best.
http://www.ameraucana.org/history.html
http://www.ameraucana.org/history.html