There are more than 12 on that list. When did man take it upon himself to divert from the original tradition by adding to the number of apostles?
The Church did not die or become invisible only upon the death of the Apostles. It continues to this day. It has grown in size and requires more bishops.
For reference, the catechism on the topic of the Sacrament of Holy Orders:
http://www.vatican.va/archive/ccc_css/archive/catechism/p2s2c3a6.htm
For reference, the catechism on the topic of the Sacrament of Holy Orders:
http://www.vatican.va/archive/ccc_css/archive/catechism/p2s2c3a6.htm