alt Hacker NewsWe have fossil records of wolves that do not seem much different from modern grey wolves. We do not have fossil records of ancestors to the grey wolves that share much of their DNA coexisting with the grey wolves.
Occam's Razor says that the posited ancestor of Canus domesticus that shared grey wolf DNA was... the grey wolf.
I believe the linked articles number 10 and 11 in the wikipedia article have a counterexample to what you just wrote.
they do also emphasize that the "northern dogs" (huskies, malamute, akita?) are very close to wolves in shared ancestry.