Brachiopod id help, Carboniferous

[Brian James Maguire]

is was found in the Carboniferous limestone of the Malahide formation , east coast Dublin Ireland, I haven’t had one of these before

[TqB]

Probably a terebratulid. Ones like this have often been called "Dielasma" but probably aren't. See this Brunton paper at archive.org (Although Dinantian may be a little too late for yours):
British Dinantian (Lower Carboniferous) Terebratulid Brachiopods

They're tricky and usually need details of internal structure - I'm struggling with a pile of silicified early Namurian ones myself.

 

[Brian James Maguire]

3 minutes ago, TqB said:

Probably a terebratulid. Ones like this have often been called "Dielasma" but probably aren't. See this Brunton paper at archive.org (Although Dinantian may be a little too late for yours):
British Dinantian (Lower Carboniferous) Terebratulid Brachiopods

They're tricky and usually need details of internal structure - I'm struggling with a pile of silicified early Namurian ones myself.

 

Thank you as always TqB, i get quite a few terebratulids but not like this one, very interesting, 

[Nimravis]

@Tidgy's Dad

[Tidgy's Dad]

Nothing to add to Tarquin's post. @TqB

Terebratulid for sure but not sure which one.