Section 291.11 - Casual collecting on National Forest System lands(a) Casual collecting is allowed without a permit on National Forest System lands where such collection is consistent with the laws governing the management of those lands, the land management plans, and where the lands in question are not closed to casual collection.(b) National Forest System lands are open to casual collection unless otherwise closed, as described in § 291.12 .(c) Research activities do not constitute casual collection, and therefore, research involving the collecting of common invertebrate and plant paleontological resources requires a permit.(d) Using scientific principles and expertise, the Authorized Officer may determine that certain invertebrate and plant paleontological resources do or do not meet the definition of "common invertebrate and plant paleontological resources" as set forth in these regulations, and thus, whether such resources can be casually collected or must be collected under permit.(e) Determinations as described above in paragraph (d) of this section are subject to the conditions as stated in § 291.9(c)(1) through (4) .(f) It is the responsibility of the collecting public to ensure that they are casually collecting in an area that is open to casual collection, and that the materials they collect are subject to casual collection.(g) Paleontological resources collected on National Forest System lands, including common invertebrate and plant paleontological resources subject to casual collecting, cannot be sold. Sale of these paleontological resources is a violation of 16 U.S.C. 470aaa-5(a)(3) and § 291.27(a)(3) and may subject the violator to civil and criminal penalties.