The term “casual collecting” means the collecting of a reasonable amount of common invertebrate and plant paleontological resources for non-commercial personal use, either by surface collection or the use of non-powered hand tools resulting in only negligible disturbance to the Earth’s surface and other resources. As used in this paragraph, the terms “reasonable amount”, “common invertebrate and plant paleontological resources” and “negligible disturbance” shall be determined by the Secretary.
16 U.S. Code § 470aaa. Definitions
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In this chapter:
(1) Casual collecting
(2) Federal landThe term “Federal land” means—
National Forest System land controlled or administered by the Secretary of Agriculture.
(3) Indian Land
(4) Paleontological resourceThe term “paleontological resource” means any fossilized remains, traces, or imprints of organisms, preserved in or on the earth’s crust, that are of paleontological interest and that provide information about the history of life on earth, except that the term does not include—
any cultural item (as defined in section 3001 of title 25).
 So in original. A closing parenthesis probably should precede the semicolon.