Hydnophora? ID please.

[1979fishgeek]

I purchased this as a Hydnophora today, but if this is one it’s polyps are absolutely minute. It’s very Psammocora or even Pavona like?

What do you think? Photos taken under different light and a coral lense filter.

 

[fishguy242]

merulina ??

 

[thamnasteroid]

Psammocora, former Coscinaraea species. Think something like P. exesa or P. columna.