Okla. Const. art. VII, § 1

The judicial power of this State shall be vested in the Senate, sitting as a Court of Impeachment, a Supreme Court, the Court of Criminal Appeals, the Court on the Judiciary, the State Industrial Court, the Court of Bank Review, the Court of Tax Review, and such intermediate appellate courts as may be provided by statute, District Courts, and such Boards, Agencies and Commissions created by the Constitution or established by statute as exercise adjudicative authority or render decisions in individual proceedings. Provided that the Court of Criminal Appeals, the State Industrial Court, the Court of Bank Review and the Court of Tax Review and such Boards, Agencies and Commissions as have been established by statute shall continue in effect, subject to the power of the Legislature to change or abolish said Courts, Boards, Agencies, or Commissions. Municipal Courts in cities or incorporated towns shall continue in effect and shall be subject to creation, abolition or alteration by the Legislature by general laws, but shall be limited in jurisdiction to criminal and traffic proceedings arising out of infractions of the provisions of ordinances of cities and towns or of duly adopted regulations authorized by such ordinances.