How do I open this door in Shroud Hearth Barrow?

I have found a door in Shroud Heath Barrow which looks almost exactly the same as the one in Black Falls Sanctum.

That door was opened with Lucan's golden claw…

… but the symbols on this door aren't quite the same (wolf instead of bear), so I don't imagine I'm supposed to use the same one.

Where can I get the claw for this door?

Solution 1:

Spoiler:

Go back to the inn with the guy's diary and talk to the innkeeper. He'll give you a sapphire claw as payment. You then use it identically to the one you use in Bleak Falls. If you haven't started the quest, pretty sure you can just talk to the innkeeper anyway and start it, then immediately fork over the diary to get the claw.

Solution 2:

Kill the elves spirit impostor, go back to the pub and the bartender will give you the sapphire claw.