User blog comment:PitchBlack696/Alatreon/@comment-4640052-20111130222859/@comment-1011548-20111130224311

It wouldn't really work; how can something (eg the 'classical' Elder Dragons) and its ancestor (Alatreon, in your hypothesis) be around at the same time? You don't see Homo sapiens and Australopithecus afarensis around at the same time. Personally I think Alatreon's similarity to other E Dragons can be explained away by saying their closely related, and only split down different evolutionary paths relatively recently.