The 3rd Council of Carthage was a local, North African council and thus could not proclaim anything dogmatically for the One Church. As you know, Revelations wasn't included in the East until the 9th century.
Yes, I mentioned that in another post on this thread. It is a good reminder for the lukers however, to remind them all that local councils are not binding for the whole Church and that, as you mention, in Constantinople the Book of Revelation was listed as "questiobable" until the 9th century.
I was simply stating that the Church, locally, did not even try to define canon until the end of the 4th century and that the Third Council of Carthage is the first such event.
The second one was, as you mentioned earlier, at Trent in the 16th century, but that was binding only to the Latin Church.