[count-your-change]

Why yes, if there are successors to the original twelve, who might they be? Paul was an apostle, was he a replacement, a successor? Who did Barnabas or Silas replace?

[smvoice]

About those successors to the original twelve..Church historian Philip Schaff writes: "The oldest links in the chain of Roman bishops are veiled in impenetrable darkness." For that reason, it is impossible for the RCC to substantiate its claims of papal succession from Peter to the present Pope.- Philip Schaff, History of the Christian Church (Grand Rapids: eerdmans, 1910), vol. 2, pp. 164-165.

But don't let that stop them from pulling Popes out of their pointy hats..

[mas cerveza por favor]

Why yes, if there are successors to the original twelve, who might they be? Paul was an apostle, was he a replacement, a successor? Who did Barnabas or Silas replace?

Interesting question. The line of Peter's successors are well-documented. Barnabas is mentioned on this wikipedia page that refers to several lines have also been recorded.

The Patriarchate of Constantinople claims unbroken succession to the Throne of Saint Andrew.
The Greek Orthodox Church of Alexandria claims unbroken succession to the Throne of Saint Mark[18]
The Russian Orthodox Church claims unbroken succession to the Throne of Saint Andrew[19]
The Armenian Apostolic Church claims unbroken succession to the Thrones of Saint Bartholomew and Saint Jude Thaddeus[20]
The Coptic Orthodox Church of Alexandria claims unbroken succession to the Throne of Saint Mark[21]
The Assyrian Church of the East, including the Saint Thomas Church (e.g., Indian (Malankara) Orthodox Church[22]) claims unbroken succession to the Throne of Saint Thomas
The Orthodox Church of Cyprus claims unbroken succession to the Throne of Saint Barnabas[23]
The Ethiopian Orthodox Church claims succession to the Throne of Saint Philip[24]
The Greek Orthodox Patriarch of Jerusalem claims succession to the Throne of Saint James the Just,[25] although this line includes Patriarchs in exile.[26] (see Orthodox Patriarch of Jerusalem )
The Roman Papacy of the Catholic Church claims unbroken succession to the Throne of Saint Peter called "Prince of the Apostles" (see Petrine Succession )

http://en.wikipedia.org/wiki/Apostolic_succession