No, you just seem to be misunderstanding. The name Araucana applied to all Araucana/Ameraucana/Easter Egger type birds. The breed we know as Araucana did not exist till a dedicated group of breeders started to select for specific traits in the early 1970s. Same goes for the Ameraucana. Meanwhile, hatcheries continued breeding with no particular goals in mind. No hatchery in the U.S. has ever had Araucana that met the current breed standard. Sure they may have had rumpless birds, or a few with tufts, but they weren't the Araucana that we have today, with consistent skin and plumage coloring.