Looked like it was just behind the ear - but only because Jones put his head in that position.

As far as Danny Green goes it was a 100% legit punch but a slightly iffy stoppage, the ref didn't stop it because Green was subsequently hurting Jones but because he was throwing so many unanswered punches - he decided it was probable that Jones would get hurt because he wasn't showing that he was going to do anything to answer or effectively evade.

I still think that he should of let him ride it out, but it is a very understanable stoppage, not very easy to argue with.