South Dakota Codified Laws
Chapter 01 - State Geologist
Section 45-1-6 - Specimens are state property.

45-1-6. Specimens are state property.
Any specimen of natural history, geology, or mineralogy, which is collected by the state geologist or any other person appointed by the state to investigate its natural and physical resources, or donated by any person, shall be the property of the state.

Source: SL 2017, ch 10, ยง3.