Help with ID

[StormKrow]

This coral was a hitchhiker on a piece of live rock from the LFS. It seems to be an encrusting species, but I'm not sure since all the colonies are still small. At first I thought it might be a Favites sp. because when its polyps are withdrawn the skeleton looks like a mini-brain coral. Any ideas?

[Phurst]

It's kinda hard to tell from the pics, but it certainly could be some kind of favid.

[lReef lKeeper]

maybe Blastomussa ?? wellsi or merletti ?? hard to tell from the pics