is this a chalice?

[MdgtRac]

I was just at my LFS and they didnt know what this was, first they said mushroom then they said favia. It looks like a chalice to me. But I picked it up for 20 bucks.

 

[Rob&Gab]

Looks like a chalice too me.

 

[Finnaddict]

Definitely is an LPS of some kind, but that center mouth tells me it might be something other than a chalice.

 

[MdgtRac]

Thats what I thought to, the mouth is almost dead center but idk what else it could be, its a hard skeleton