18 CFR § 1312.13 - Custody of archaeological resources.
(a) Archaeological resources excavated or removed from the public lands remain the property of the United States.
(b) Archaeological resources excavated or removed from Indian lands remain the property of the Indian or Indian tribe having rights of ownership over such resources.
(c) The Secretary of the Interior may promulgate regulations providing for the exchange of archaeological resources among suitable universities, museums, or other scientific or educational institutions, for the ultimate disposition of archaeological resources, and for standards by which archaeological resources shall be preserved and maintained, when such resources have been excavated or removed from public lands and Indian lands.
(d) In the absence of regulations referenced in paragraph (c) of this section, the Federal land manager may provide for the exchange of archaeological resources among suitable universities, museums, or other scientific or educational institutions, when such resources have been excavated or removed from public lands under the authority of a permit issued by the Federal land manager.
(e) Notwithstanding the provisions of paragraphs (a) through (d) of this section, the Federal land manager will follow the procedures required by NAGPRA and its implementing regulations for determining the disposition of Native American human remains and other “cultural items”, as defined by NAGPRA, that have been excavated, removed, or discovered on public lands.