User blog comment:Khalael/Canon Policy Discussion 1: Space Marines/@comment-2253300-20131103062045

On the matter of Space Wolf and Salamander Successors i agree that Space Wolves can not have Successor Chapters. This is clearly stated by the canon. I am less certain with regard to the Salamanders. It is for certain that the Salamanders had no 2nd Founding Chapters due to the atrocious casualties they suffered at the Drop Site Massacre, but that doesn't mean that they couldn't have had successors in later Foundings. In spite of that it has been stated that the Salamnders' Gene-seed suffers from a high chance of mutation, and there are no Chapters that have been definitively confirmed as being descended from them. It can be reasonably assumed that the Imperium has passed them over when it comes to sconsideration for new Chapter, but I can not confidently say on that matter what is right.