Mo. Rev. Stat. § 431.120
Current with changes from the 2023 Legislative Session
In case of the death of one or more of the joint obligors or promisors, the joint debt or contract shall and may survive against the heirs, executors and administrators of the deceased obligor or promisor, as well as against the survivors.
§ 431.120, RSMo
RSMo 1939 § 3341