S.D. Codified Laws § 43-2-17
Current with legislation signed by the governor on or before 3/6/2024
Every interest created in favor of several persons in their own right is an interest in common, unless acquired by them in partnership, for partnership purposes, or unless declared in its creation to be a joint interest, as provided in §§ 43-2-12 to 43-2-14, inclusive.
SDCL 43-2-17