Are bardic masterpieces Su(does SR apply)?

[Meager Rolmug]

Why on earth is the type(Su, Sp, Ex) missing in Ultimate Magic section describing masterpieces? Seems like a completely basic necessity was just skipped.

[Saethori]

Bardic Masterpieces wrote:

Effect: This brief description summarizes what occurs when a bard performs the masterpiece. Unless otherwise stated, a masterpiece’s effects are supernatural.

Spell Resistance does not apply, but you cannot use them in antimagic areas.

[Meager Rolmug]

Saethori wrote:

Bardic Masterpieces wrote:

Effect: This brief description summarizes what occurs when a bard performs the masterpiece. Unless otherwise stated, a masterpiece’s effects are supernatural.

Spell Resistance does not apply, but you cannot use them in antimagic areas.

Don't know how i missed that, thank you.