Okla. Stat. tit. 30, § 4-503
On the death of one of two or more joint guardians, the power continues to the survivor until a further appointment is made by the court.
R.L. 1910, § 3336; Renumbered from 30 O.S. § 17 by Laws 1988, HB 1078, c. 329, § 134, eff. December 1, 1988.