Board Thread:Help!/@comment-7657843-20170414115344/@comment-188432-20170530175855

DWM 447 certainly suggests they were. However, the dialogue directly states that they are:
 * OSWIN: Survivors of particular wars. Spiridon, Kembel, Eridius, Vulcan, Exxilon. Ringing any bells?

"Exxilon" means Death to the Daleks.