Okla. Stat. tit. 60, § 60-41: Remainder in fee to heirs after life estate

When a remainder is limited to the heirs, or heirs of the body,

of a person to whom a life estate in the same property is given, the

persons who, on the termination of the life estate, are the

successors or heirs of the body of the owner for life, are entitled

to take by virtue of the remainder so limited to them, and not as

mere successors of the owner for life.