Complex sentence: The pro-cathedral or temporary cathedral of his jurisdiction, follows the Roman Catholic or Latin rite and serves as the seat of the Catholic diocese of Laghouat (Dioecesis Laghuatensis) that was created by decision of Pope Pius XII by bull "Dum Tantis".
Split into simpler sentences: The pro-cathedral or temporary cathedral of his jurisdiction, follows the Roman rite or Latin rite. It serves as the seat of the Catholic Diocese of Laghouat (Dioecesis Laghuatensis), which was established by decision of Pope Pius XII by bull "Dum Tantis".