Infallible Papal Bulls

Sometimes simply asking a question can be interesting. Here's a Catholic Answers inquiry-

Greetings,

I am familiar with Mr. Akin's article here. Based on his opening comment, "Many people have a difficult time discerning when the magisterium has engaged its infallibility and when it hasn’t," is it the responsibility of individual Roman Catholics to determine which Papal statements are infallible, or has the Magisterium provided an infallible list of which historical papal declarations are infallible?

Thanks.