Board Thread:Questions and Answers/@comment-1620907-20151127200839/@comment-30488984-20170812061039

RemosPendragon wrote: Hmm.. I dunno. I guess it is just simpler to keep them in Category:Space Wolves Successors, I don't think many will get the difference... especially if you are new to 40k.

I'm more concerned about Primaris chapters created apart from the initial Ultima Founding, during the Indomitus Crusade. But I guess they can just be called Ultima Founding chapters... the manpower in them was created into the Ultima Fouonding in the first place. Though it makes Ultima Fouding to last ~115 years? But don't most founding end up taking anywhere from like 30 years to more than a century anyway? Obviously most of that is the preparation for said founding but since the Ultima Founding was kind of out of nowhere with Guilliman practically rising from the dead (I know he was in stasis but pretty much to the average Imperial citizen, the Primarch was dead).

I believe that it can be argued that the Primaris Marine Chapters that were "founded" during this period needed a lot of extra time to find suitable planets, build fortress monasteries, build up their armories, and assemble fleets. Its not like Mars or Guilliman just had all this gear just lying around and prepared for them to take. The few hundred Primaris Chapters that would have been founded during this time would have been ludicrously straining to the industrial capacity of the Imperium, especially since it is now torn into two and half of the forge worlds have been 'lost' due to the inability to contact them across the rift.

This is all purely speculation on my part, I don't have the new Codex infront of me to back me up but going off of the other foundings, I do not think this is too crazy to consider.