Okla. Stat. tit. 58, § 58-1004: Husband and wife

Where a husband and wife have died, leaving community property,

and there is no sufficient evidence to establish that they have died

otherwise than simultaneously, one-half (1/2) of all the community

property shall pass as if the husband had survived and as if said

one-half (1/2) were his separate property, and the other one-half

(1/2) thereof shall pass as if the wife had survived and as if said

other one-half (1/2) were her separate property.