Aussie LPS hitchhiker ID

[meir]

Hey guys, got this on a piece of UC Aussie LR and cannot for the life of me ID it. It has a stony stem and looks almost like a blastomussa but then looks like a Duncan

 

[encrustingacro]

I would guess that it’s an aberrant fungiid plate coral. May not be, though, as it’s on a stem.